remove non-free leanpub books (#7026)

* remove non-free leanpub books

45 books removed, the 59 books remaining are still free.

* re-add 5, fix 3

a programmed scan of the leanpub urls reveal 5 that should not have been removed and 3 that should use /read urls

* revert to previous index structure

books/free-programming-books-es.md

@@ -11,7 +11,6 @@
 * [Android](#android)
 * [C](#c)
 * [C++](#cpp)
-* [Coffeescript](#coffeescript)
 * [Emacs](#emacs)
 * [Ensamblador](#ensamblador)
 * [Erlang](#erlang)
@@ -47,7 +46,6 @@
 * [Scratch](#scratch)
 * [SQL](#sql)
 * [Subversion](#subversion)
-* [SVG](#svg)
 * [TypeScript](#typescript)
     * [Angular](#angular)
 
@@ -142,11 +140,6 @@
 * [Ejercicios de programación creativos y recreativos en C++](http://antares.sip.ucm.es/cpareja/libroCPP/) (HTML)
 
 
-### Coffeescript
-
-* [Coffeescript, un pequeño gran libro](https://leanpub.com/coffeescript) - Javi Jiménez (Leanpub cuenta requerida)
-
-
 ### Ensamblador
 
 * [Lenguaje Ensamblador para PC](https://pacman128.github.io/static/pcasm-book-spanish.pdf) - Paul A.Carter (PDF)
@@ -252,9 +245,7 @@
 
 #### React
 
-* [Desarrollo de Aplicaciones Web con React.js y Redux.js](https://leanpub.com/react-redux) - Sergio Xalambrí (PDF, EPUB, MOBI; Leanpub cuenta requerida)
+* [Desarrollo de Aplicaciones Web con React.js y Redux.js](https://leanpub.com/react-redux/read) - Sergio Xalambrí (HTML)
-* [Descubre React](https://leanpub.com/descubre-react) - Javi Jiménez (HTML, PDF, EPUB, MOBI; Leanpub cuenta requerida)
-* [El Camino para Aprender React](https://leanpub.com/the-road-to-learn-react-spanish) (PDF, EPUB, MOBI; Leanpub cuenta requerida)
 * [SurviveJS - React de aprendiz a maestro](https://es.survivejs.com) - Juho Vepsäläinen (HTML, PDF)
 
 
@@ -397,11 +388,6 @@
 * [Control de versiones con Subversion](http://svnbook.red-bean.com/nightly/es/index.html) (HTML)
 
 
-### SVG
-
-* [Scalable. Un libro sobre SVG](https://leanpub.com/scalable/) (Leanpub cuenta requerida)
-
-
 ### TypeScript
 
 * [Aprendizaje TypeScript](https://riptutorial.com/Download/typescript-es.pdf) - riptutorial (PDF)

books/free-programming-books-id.md

@@ -45,7 +45,6 @@
 ### <a id="cpp"></a>C++
 
 * [Belajar C++ Dasar Bahasa Indonesia](https://github.com/kelasterbuka/CPP_dasar-dasar-programming) - Kelas Terbuka
-* [Koding C++ Dengan Qt](https://leanpub.com/koding-cpp-qt) *(Membutuhkan akun Leanpub atau email yang valid)*
 
 
 ### CodeIgniter
@@ -71,7 +70,6 @@
 ### Git
 
 * [Belajar Git untuk Pemula](https://github.com/petanikode/belajar-git)
-* [Kontrol Versi dengan Git](https://leanpub.com/kontrol-versi-git)
 * [Pro Git 2nd Edition](https://git-scm.com/book/id/v2)
 
 
@@ -86,7 +84,6 @@
 
 * [Belajar HTML dan CSS](http://www.ariona.net/ebook-belajar-html-dan-css/)
 * [Ebook Belajar HTML Dan CSS Dasar](https://www.malasngoding.com/download-ebook-belajar-html-dan-css-dasar-gratis/)
-* [HTML & CSS: Buat Websitemu Sendiri ](https://leanpub.com/html-css--buat-webistemu-sendiri) *(Membutuhkan akun Leanpub atau email yang valid)*
 * [Tutorial Dasar CSS untuk Pemula](https://www.petanikode.com/tutorial/css/) - Ahmad Muhardian (Petani Kode) *(:construction: Dalam Proses)*
 * [Tutorial HTML untuk Pemula](https://www.petanikode.com/tutorial/html/) - Ahmad Muhardian (Petani Kode)
 
@@ -125,7 +122,7 @@
 
 ### Pemrograman Fungsional
 
-* [Pemrograman Fungsional untuk Rakyat Jelata dengan Scalaz](https://leanpub.com/fpmortals-id)
+* [Pemrograman Fungsional untuk Rakyat Jelata dengan Scalaz](https://leanpub.com/fpmortals-id/read) (HTML)
 
 
 ### Pemrograman Kompetitif
@@ -171,9 +168,6 @@
 
 ### TypeScript
 
-* [Belajar TypeScript](https://leanpub.com/belajar-typescript) *(Membutuhkan akun Leanpub atau email yang valid)*
-
-
 #### Angular
 
 * [Tutorial Angular Indonesia](https://degananda.com/tutorial-angular-indonesia-daftar-isi-download-pdf/) - Degananda Ferdian Priyambada (HTML)

books/free-programming-books-langs.md

@@ -56,7 +56,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Emacs](#emacs)
 * [Embedded Systems](#embedded-systems)
 * [Erlang](#erlang)
-* [ESP8266](#esp8266)
 * [F#](#f-sharp)
 * [Firefox OS](#firefox-os)
 * [Flutter](#flutter)
@@ -80,7 +79,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [HTTP](#http)
 * [HTTPS](#https)
 * [Icon](#icon)
-* [Idris](#idris)
 * [iOS](#ios)
 * [IoT](#iot)
 * [Isabelle/HOL](#isabellehol)
@@ -95,7 +93,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
     * [Wicket](#wicket)
 * [JavaScript](#javascript)
     * [AngularJS](#angularjs)
-    * [Aurelia](#aurelia)
     * [Backbone.js](#backbonejs)
     * [Booty5.js](#booty5js)
     * [D3.js](#d3js)
@@ -471,7 +468,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [C# Programming](https://en.wikibooks.org/wiki/C_Sharp_Programming) - Wikibooks
 * [C# Programming Yellow Book](https://www.robmiles.com/s/CSharp-Book-2019-Refresh.pdf) - Rob Miles (PDF) (2019)
 * [C# Smorgasbord](https://www.filipekberg.se) - Filip Ekberg (HTML) [(PDF, EPUB, MOBI)](https://www.filipekberg.se/2018/04/02/csharp-smorgasbord-free/) (2018)
-* [C# Tips](https://leanpub.com/cstips) - Jason Roberts *(Leanpub account or valid email requested)*
 * [Creating Mobile Apps with Xamarin.Forms C#](https://developer.xamarin.com/guides/xamarin-forms/creating-mobile-apps-xamarin-forms/) - Charles Petzold
 * [Daily Design Patterns](https://web.archive.org/web/20170930132000/https://www.exceptionnotfound.net/downloads/dailydesignpattern.pdf) - Matthew P Jones (PDF)
 * [Data Structures and Algorithms with Object-Oriented Design Patterns in C#](https://web.archive.org/web/20161220072449/http://www.brpreiss.com/books/opus6/) - Bruno Preiss
@@ -579,7 +575,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 ### CoffeeScript
 
 * [CoffeeScript Cookbook](https://coffeescript-cookbook.github.io)
-* [CoffeeScript Ristretto](https://leanpub.com/coffeescript-ristretto/read) - Reginald Braithwaite *(Leanpub account or valid email requested)*
+* [CoffeeScript Ristretto](https://leanpub.com/coffeescript-ristretto/read) - Reginald Braithwaite 
 * [Hard Rock CoffeeScript](https://alchaplinsky.github.io/hard-rock-coffeescript/) - Alex Chaplinsky (gitbook)
 * [Smooth CoffeeScript](http://autotelicum.github.io/Smooth-CoffeeScript/SmoothCoffeeScript.html)
 * [The Little Book on CoffeeScript](http://arcturo.github.io/library/coffeescript/) - Alex MacCaw, David Griffiths, Satoshi Murakami, Jeremy Ashkenas
@@ -715,11 +711,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [The BEAM Book](https://blog.stenmans.org/theBeamBook) (HTML)
 
 
-### ESP8266
-
-* [Kolban's book on the ESP32 & ESP8266](https://leanpub.com/ESP8266_ESP32) *(Leanpub account or valid email requested)*
-
-
 ### F Sharp
 
 * [Analyzing and Visualizing Data with F#](https://web.archive.org/web/20201023042804/https://www.oreilly.com/programming/free/files/analyzing-visualizing-data-f-sharp.pdf) - Tomas Petricek (PDF) *(:card_file_box: archived)*
@@ -948,11 +939,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Twitter Bootstrap Succinctly](https://www.syncfusion.com/resources/techportal/details/ebooks/twitterbootstrap) - Peter Shaw
 
 
-### Idris
-
-* [Gentle Introduction to Dependent Types with Idris](https://leanpub.com/gidti) - Boro Sitnikovski *(Leanpub account or valid email requested)*
-
-
 ### Icon
 
 * [The Implementation of the Icon Programming Language](http://www.cs.arizona.edu/icon/ibsale.htm)
@@ -1048,7 +1034,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 #### Java Reporting
 
-* [The ABC of PDF with iText: PDF Syntax essentials](https://leanpub.com/itext_pdfabc) - Bruno Lowagie *(Leanpub account or valid email requested)*
 * [The JasperReports Ultimate Guide, Third Edition](http://jasperreports.sourceforge.net/JasperReports-Ultimate-Guide-3.pdf) (PDF)
 
 
@@ -1119,7 +1104,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Learning JavaScript Design Patterns](http://addyosmani.com/resources/essentialjsdesignpatterns/book/) - Addy Osmani (HTML)
 * [Let's Learn ES6](https://bubblin.io/cover/let-s-learn-es6-by-ryan-christiani#frontmatter) - Ryan Christiani (Superbook format)
 * [Managing Space and Time with JavaScript - Book 1: The Basics](http://www.noelrappin.com) - Noel Rappin (dead link)
-* [Marionette Exposé: Learn to write modular Javascript applications using Backbone Marionette and RequireJS/AMD](https://leanpub.com/marionetteexpose) - Jack Killilea (HTML, PDF, EPUB, MOBI; Leanpub account or valid email requested)
 * [Mozilla Developer Network's JavaScript Guide](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide) - Mozilla Developer Network contributors (HTML)
 * [Neural Networks with JavaScript Succinctly](https://www.syncfusion.com/ebooks/neural-networks-with-javascript-succinctly) - James McCaffrey (PDF, EPUB, MOBI)
 * [Oh My JS](https://web.archive.org/web/20150317231950/https://leanpub.com/ohmyjs/read) - Azat Mardanov (HTML)
@@ -1154,20 +1138,14 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [AngularJS Style Guide for teams](https://github.com/toddmotto/angularjs-styleguide) - Todd Motto (HTML)
 * [AngularJS Succinctly](https://www.syncfusion.com/resources/techportal/ebooks/angularjs) - Frederik Dietz (PDF, EPUB, Kindle) (email address *requested*, not required)
 * [AngularJS Tutorial](https://docs.angularjs.org/tutorial) (HTML)
-* [AngularJS vs EmberJs](https://angularjs-emberjs-compare.bguiz.com) - Brendan Graetz (HTML, [PDF, EBOOK, Kindle](https://leanpub.com/angularjs-emberjs-compare)) (Leanpub account / email address *not required*)
+* [AngularJS vs EmberJs](https://angularjs-emberjs-compare.bguiz.com) - Brendan Graetz (HTML)
 * [Seven-Part Introduction to AngularJS](http://ngokevin.com/blog/angular-1/) - Keving Ngo (HTML, [:package: demos, open-sourced examples](https://github.com/ngokevin/angularbook))
 * [Unit Testing Best Practices in AngularJS](http://andyshora.com/unit-testing-best-practices-angularjs.html) - Andy Shora (HTML)
 
 
-#### Aurelia
-
-* [Beginning Aurelia](https://leanpub.com/beginning-of-aurelia) - behzad *(Leanpub account or valid email requested)*
-
-
 #### Backbone.js
 
 * [A pragmatic guide to Backbone.js apps](http://pragmatic-backbone.com)
-* [Backbone Tutorials: Beginner, Intermediate and Advanced](https://leanpub.com/backbonetutorials) - Thomas Davis *(Leanpub account or valid email requested)*
 * [Backbonejs Tutorials](https://cdnjs.com/libraries/backbone.js/tutorials/)
 * [Building Single Page Web Apps with Backbone.js](https://singlepagebook.supportbee.com) (:construction: *in process*)
 * [Developing Backbone.js Applications](http://addyosmani.github.io/backbone-fundamentals/)
@@ -1211,7 +1189,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 #### Ember.js
 
-* [AngularJs vs EmberJs](https://angularjs-emberjs-compare.bguiz.com) - Brendan Graetz (HTML, [PDF, EPUB, Kindle](https://leanpub.com/angularjs-emberjs-compare)) (Leanpub account / email address *not required*)
+* [AngularJs vs EmberJs](https://angularjs-emberjs-compare.bguiz.com) - Brendan Graetz (HTML)
 * [DockYard Ember.js Style Guide](https://github.com/DockYard/styleguides/blob/master/engineering/ember.md)
 * [Ember App with RailsApi](https://dockyard.com/blog/ember/2013/01/07/building-an-ember-app-with-rails-api-part-1)
 * [Ember.js - Getting started](https://guides.emberjs.com/release/)
@@ -1264,7 +1242,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Introduction to Node.js](https://nodejs.dev/learn) (HTML)
 * [Mastering Node](https://github.com/visionmedia/masteringnode) - visionmedia ([PDF](https://github.com/visionmedia/masteringnode/blob/master/book.pdf))
 * [Mixu's Node Book](http://book.mixu.net/node/)
-* [Module Patterns](https://leanpub.com/modulepatterns) - Pedro Teixeira (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
 * [Node Documentation](https://nodejs.org/en/docs/)
 * [Node: Up and Running](https://www.oreilly.com/library/view/node-up-and/9781449332235/) - Tom Hughes-Croucher
 * [Node.js Notes for Professionals](http://goalkicker.com/NodeJSBook) - Compiled from StackOverflow Documentation (PDF)
@@ -1307,7 +1284,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 #### React Native
 
-* [Programming React Native](https://leanpub.com/programming-react-native) *(Leanpub account or valid email requested)*
 * [React Native Animation Book](http://browniefed.com/react-native-animation-book/)
 * [React Native Express](http://www.reactnativeexpress.com)
 * [React Native Notes for Professionals](https://goalkicker.com/ReactNativeBook) - Compiled from StackOverflow documentation (PDF)
@@ -1319,7 +1295,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 * [Full-Stack Redux Tutorial](http://teropa.info/blog/2015/09/10/full-stack-redux-tutorial.html)
 * [SoundCloud Application in React + Redux](https://www.robinwieruch.de/the-soundcloud-client-in-react-redux/)
-* [The Complete Redux Book](https://leanpub.com/redux-book) - Boris Dinkevich and Ilya Gelman *(Leanpub account or valid email requested)*
+* [The Complete Redux Book](https://leanpub.com/redux-book/read) - Boris Dinkevich and Ilya Gelman (HTML)
 
 
 #### Svelte
@@ -1440,11 +1416,10 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Interpreting LISP](http://www.civilized.com/files/lispbook.pdf) - Gary D. Knott (PDF)
 * [Learn Lisp The Hard Way](https://github.com/LispTO/llthw) - Colin J.E. Lupton
 * [Let Over Lambda - 50 Years of Lisp](http://letoverlambda.com/index.cl/) - D. Hoyte
-* [Lisp for the Web](https://leanpub.com/lispweb) - Adam Tornhill (PDF, EPUB, MOBI) *(Leanpub account or valid email requested)*
 * [Lisp Hackers: Interviews with 100x More Productive Programmers](https://leanpub.com/lisphackers/read) - Vsevolod Dyomkin
 * [Lisp Koans](https://github.com/google/lisp-koans)
 * [Lisp Web Tales](https://leanpub.com/lispwebtales) - Pavel Penev *(Leanpub account or valid email requested)*
-* [Loving Common Lisp, or the Savvy Programmer's Secret Weapon](https://leanpub.com/lovinglisp) - Mark Watson (PDF, EPUB, MOBI) *(Leanpub account or valid email requested)*
+* [Loving Common Lisp, or the Savvy Programmer's Secret Weapon](https://leanpub.com/lovinglisp/read) - Mark Watson (HTML)
 * [On Lisp](http://www.paulgraham.com/onlisp.html) - P. Graham
 * [Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp](https://github.com/norvig/paip-lisp) - Peter Norvig (PDF, EPUB, Markdown)
 * [Practical Common Lisp](http://www.gigamonkeys.com/book/) - P. Seibel
@@ -1734,12 +1709,10 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 #### Laravel
 
 * [100 (and counting) Laravel Quick Tips](https://laraveldaily.com/wp-content/uploads/2020/04/laravel-tips-2020-04.pdf) - Povilas Korop / LaravelDaily Team (PDF)
-* [Laravel 5.x Official Documentation. Synced Daily](https://leanpub.com/laravel-5) *(Leanpub account or valid email requested)*
 * [Laravel Best Practices](http://www.laravelbestpractices.com)
 * [Laravel: Code Bright](http://daylerees.com/codebright) - Dayle Rees
 * [Laravel: Code Happy](http://daylerees.com/codehappy) - Dayle Rees
 * [Laravel: Code Smart](https://daylerees.com/codesmart/) - Dayle Rees
-* [Laravel Collections Unraveled](https://leanpub.com/laravelcollectionsunraveled) - Jeffrey Madsen *(Leanpub account or valid email requested)*
 
 
 #### Symfony
@@ -1774,10 +1747,10 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 ### PowerShell
 
-* [A Unix Person's Guide to PowerShell](https://leanpub.com/aunixpersonsguidetopowershell) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [A Unix Person's Guide to PowerShell](https://leanpub.com/aunixpersonsguidetopowershell/read) - The DevOps Collective, Inc. (HTML)
-* [Creating HTML Reports in PowerShell](https://leanpub.com/creatinghtmlreportsinwindowspowershell) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [Creating HTML Reports in PowerShell](https://leanpub.com/creatinghtmlreportsinwindowspowershell/read) - The DevOps Collective, Inc. (HTML)
-* [DevOps: The Ops Perspective](https://leanpub.com/devopstheopsperspective) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [DevOps: The Ops Perspective](https://leanpub.com/devopstheopsperspective/read) - The DevOps Collective, Inc. (HTML)
-* [Ditch Excel: Making Historical & Trend Reports in PowerShell](https://leanpub.com/ditchexcelmakinghistoricalandtrendreportsinpowershell) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [Ditch Excel: Making Historical & Trend Reports in PowerShell](https://leanpub.com/ditchexcelmakinghistoricalandtrendreportsinpowershell/read) - The DevOps Collective, Inc. (HTML)
 * [Layman’s Guide to PowerShell 2.0 remoting](https://ravichaganti.com/ebooks/AlaymansguidetoPowerShell2remotingv2.pdf) (PDF)
 * [Learn PowerShell Core 6.0](https://www.packtpub.com/free-ebooks/learn-powershell-core-60) - David das Neves, Jan-Hendrik Peters (Packt account *required*)
 * [Learn PowerShell in Y Minutes](https://learnxinyminutes.com/docs/powershell/)
@@ -1786,14 +1759,13 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [PowerShell 2.0 – One CMDLET At A Time](http://www.jonathanmedd.net/wp-content/uploads/2010/09/PowerShell_2_One_Cmdlet_at_a_Time.pdf) (PDF)
 * [PowerShell Notes for Professionals](http://goalkicker.com/PowerShellBook/) - Compiled from StackOverflow documentation (PDF)
 * [PowerShell Succinctly, Syncfusion](https://www.syncfusion.com/resources/techportal/ebooks/powershell) (PDF, Kindle) (email address *requested*, not required)
-* [PowerShell Tips to Write By](https://leanpub.com/powershelltips) - Adam Bertram *(Leanpub account or valid email requested)* (:construction: *in process*)
+* [Secrets of PowerShell Remoting](https://leanpub.com/secretsofpowershellremoting/read) - The DevOps Collective, Inc. (HTML)
-* [Secrets of PowerShell Remoting](https://leanpub.com/secretsofpowershellremoting) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [The Big Book of PowerShell Error Handling](https://leanpub.com/thebigbookofpowershellerrorhandling/read) - The DevOps Collective, Inc. (HTML)
-* [The Big Book of PowerShell Error Handling](https://leanpub.com/thebigbookofpowershellerrorhandling) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [The Big Book of PowerShell Gotchas](https://leanpub.com/thebigbookofpowershellgotchas/read) - The DevOps Collective, Inc. (HTML)
-* [The Big Book of PowerShell Gotchas](https://leanpub.com/thebigbookofpowershellgotchas) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [The Monad Manifesto - Annotated](https://leanpub.com/themonadmanifestoannotated/read) - The DevOps Collective, Inc. (HTML)
-* [The Monad Manifesto - Annotated](https://leanpub.com/themonadmanifestoannotated) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [The PowerShell + DevOps Global Summit Manual for Summiteers](https://leanpub.com/windowspowershellnetworkingguide/read) - The DevOps Collective, Inc. (HTML)
-* [The PowerShell + DevOps Global Summit Manual for Summiteers](https://leanpub.com/windowspowershellnetworkingguide) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [Why PowerShell?](https://leanpub.com/whypowershell/read) - The DevOps Collective, Inc. (HTML)
-* [Why PowerShell?](https://leanpub.com/whypowershell) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
+* [Windows PowerShell Networking Guide](https://leanpub.com/windowspowershellnetworkingguide/read) - The DevOps Collective, Inc. (HTML)
-* [Windows PowerShell Networking Guide](https://leanpub.com/windowspowershellnetworkingguide) - The DevOps Collective, Inc. (PDF, ePub, MOBI, HTML) *(Leanpub account or valid email requested)*
 
 
 ### Processing
@@ -1876,7 +1848,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
     * [How to Think Like a Computer Scientist: Learning with Python 1st Edition](https://greenteapress.com/wp/learning-with-python/) - Allen B. Downey, Jeff Elkner and Chris Meyers (2.4) (HTML, PDF)
     * [How to Think Like a Computer Scientist: Learning with Python 2nd Edition](https://openbookproject.net/thinkcs/python/english2e/) - Jeffrey Elkner, Allen B. Downey, and Chris Meyers (Using Python 2.x)
     * [How to Think Like a Computer Scientist: Learning with Python 3 (RLE)](https://openbookproject.net/thinkcs/python/english3e/) - Peter Wentworth, Jeffrey Elkner, Allen B. Downey, and Chris Meyers [(PDF)](https://www.ict.ru.ac.za/Resources/cspw/thinkcspy3/thinkcspy3.pdf)
-* [Inside The Python Virtual Machine](https://leanpub.com/insidethepythonvirtualmachine) - Obi Ike-Nwosu (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
+* [Inside The Python Virtual Machine](https://leanpub.com/insidethepythonvirtualmachine/read) - Obi Ike-Nwosu (HTML)
 * [Intermediate Python](https://book.pythontips.com/en/latest/) - Muhammad Yasoob Ullah Khalid (1st edition)
 * [Introduction to Programming with Python](http://opentechschool.github.io/python-beginners/en/) (3.3)
     * [Introduction to Programming Using Python](http://python-ebook.blogspot.co.uk) - Cody Jackson (1st edition) (2.3)
@@ -2016,9 +1988,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [blogdown: Creating Websites with R Markdown](https://bookdown.org/yihui/blogdown/) - Yihui Xie, Amber Thomas, Alison Presmanes Hill
 * [Cookbook for R](http://www.cookbook-r.com) - Winston Chang
 * [Data Analysis and Prediction Algorithms with R](https://rafalab.github.io/dsbook/) - Rafael A. Irizarry
-* [Data Analysis for the Life Sciences](https://leanpub.com/dataanalysisforthelifesciences) - Rafael A Irizarry, Michael I Love *(Leanpub account or valid email requested)*
 * [Efficient R programming](https://csgillespie.github.io/efficientR/) - Colin Gillespie, Robin Lovelace
-* [Exploratory Data Analysis with R](https://leanpub.com/exdata) - Roger D. Peng *(Leanpub account or valid email requested)*
 * [Forecasting: Principles and Practice](https://otexts.com/fpp3/) - Rob J Hyndman and George Athanasopoulos
 * [Functional Programming](https://dcl-prog.stanford.edu) - Sara Altman, Bill Behrman and Hadley Wickham
 * [Introduction to Probability and Statistics Using R](https://github.com/gjkerns/IPSUR) - G. Jay Kerns (PDF)
@@ -2032,7 +2002,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [R Packages](http://r-pkgs.had.co.nz) - Hadley Wickham
 * [R Practicals](http://www.columbia.edu/~cjd11/charles_dimaggio/DIRE/resources/R/practicalsBookNoAns.pdf) (PDF)
 * [R Programming](https://en.wikibooks.org/wiki/R_Programming) - Wikibooks
-* [R Programming for Data Science](https://leanpub.com/rprogramming) - Roger D. Peng *(Leanpub account or valid email requested)*
 * [R Succinctly, Syncfusion](https://www.syncfusion.com/resources/techportal/ebooks/rsuccinctly) (PDF, Kindle) (email address *requested*, not required)
 * [Summary and Analysis of Extension Program Evaluation in R](https://rcompanion.org/handbook/index.html) - Salvatore S. Mangiafico
 * [The caret Package](http://topepo.github.io/caret/index.html) - Max Kuhn
@@ -2121,7 +2090,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Api on Rails 6](https://github.com/madeindjs/api_on_rails) - Alexandre Rousseau
 * [Building REST APIs with Rails](https://www.softcover.io/read/06acc071/api_on_rails) - Abraham Kuri Vargas
 * [Kestrels, Quirky Birds, and Hopeless Egocentricity](https://leanpub.com/combinators/read) - Reg Braithwaite
-* [Learn Ruby on Rails: Book One](https://leanpub.com/learnrubyonrails) - Daniel Kehoe (PDF, EPUB) *(Leanpub account or valid email requested)*
 * [Objects on Rails](https://web.archive.org/web/20190319201525/http://objectsonrails.com/) - Avdi Grimm
 * [Rails Girls Guides](http://guides.railsgirls.com)
 * [Ruby Notes for Professionals](https://books.goalkicker.com/RubyBook/) - Compiled from StackOverflow Documentation (PDF)
@@ -2453,7 +2421,6 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Learn Vim For the Last Time](https://danielmiessler.com/study/vim/) - Daniel Miessler
 * [Learn Vim Progressively](http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively/)
 * [Learn Vimscript the Hard Way](http://learnvimscriptthehardway.stevelosh.com) - Steve Losh
-* [Use Vim Like A Pro](https://leanpub.com/VimLikeAPro) - Tim Ottinger *(Leanpub account or valid email requested)*
 * [Vi Improved -- Vim](http://www.truth.sk/vim/vimbook-OPL.pdf) - Steve Oualline (PDF)
 * [VIM-GALORE - All things Vim!](https://github.com/mhinz/vim-galore#readme) (HTML)
 * [Vim Recipes](https://web.archive.org/web/20130302172911/http://vim.runpaint.org/vim-recipes.pdf) (PDF)

books/free-programming-books-pt_BR.md

@@ -128,7 +128,6 @@
 ### Docker
 
 * [Descomplicando o Docker](https://livro.descomplicandodocker.com.br) - Jeferson Fernando
-* [Docker para desenvolvedores](https://leanpub.com/dockerparadesenvolvedores) - Rafael Gomes *(necessário conta no Leanpub ou e-mail válido)*
 
 
 ### Engenharia de Software
@@ -150,7 +149,6 @@
 #### Outros
 
 * [CI - Integração Contínua Sem Desculpa](https://ci.mrprompt.com.br)
-* [Deploy em produção para desenvolvedores](https://leanpub.com/deployemprodparadevs) - Rafael Gomes *(necessário conta no Leanpub ou e-mail válido)*
 * [Engenharia de Software Moderna](https://engsoftmoderna.info) - Marco Tulio Valente (HTML)
 * [Primeiros passos com Padrões de Projeto](https://leanpub.com/primeiros-passos-com-padroes-de-projeto/)
 
@@ -187,7 +185,6 @@
 * [Desenvolvimento Web com HTML, CSS e JavaScript](https://www.caelum.com.br/apostila-html-css-javascript/) - Caelum
 * [Dive Into HTML5](http://diveintohtml5.com.br)
 * [Estruturando o HTML com CSS](http://pt-br.learnlayout.com)
-* [Websites Atendendo a Requisitos de Acessibilidade e Usabilidade](https://leanpub.com/warau) - Leonelo Dell Anhol Almeida, Maria Cecília Calani Baranauskas, Vagner Figueredo de Santana (PDF) *(Leanpub account or valid email requested)*
 
 
 ### Java
@@ -207,7 +204,7 @@
 * [Eloquente JavaScript](https://github.com/braziljs/eloquente-javascript)
 * [EXPERT JS Stack](http://stack.desenvolvedor.expert)
 * [Guia JavaScript](https://developer.mozilla.org/pt-BR/docs/Web/JavaScript/Guide)
-* [Guia Rápido de Desenvolvimento para Firefox OS](https://leanpub.com/guiarapidofirefoxos)
+* [Guia Rápido de Desenvolvimento para Firefox OS](https://leanpub.com/guiarapidofirefoxos/read) (HTML)
 * [JS: A forma certa](http://jstherightway.org/pt-br/)
 * [You Don't Know JS: Async & Performance](https://github.com/cezaraugusto/You-Dont-Know-JS/blob/portuguese-translation/async%20&%20performance/README.md)
 * [You Don't Know JS: ES6 & Além](https://github.com/cezaraugusto/You-Dont-Know-JS/blob/portuguese-translation/es6%20&%20beyond/README.md)
@@ -272,7 +269,7 @@
 #### Node.js
 
 * [Aplicações web real-time com Node.js](https://github.com/caio-ribeiro-pereira/livro-nodejs) - Caio Ribeiro Pereira
-* [Construindo APIs testáveis com Node.js](https://leanpub.com/construindo-apis-testaveis-com-nodejs/) - Waldemar Neto *(necessário conta no Leanpub ou e-mail válido)*
+* [Construindo APIs testáveis com Node.js](https://leanpub.com/construindo-apis-testaveis-com-nodejs/read) - Waldemar Neto (HTML)
 * [Node.js para Leigos](https://udgwebdev.github.io/nodejs/)
 * [Raspagem de dados com Node.js](http://tableless.com.br/raspagem-de-dados-com-node-js/)
 
@@ -280,7 +277,6 @@
 #### React
 
 * [React: JavaScript reativo](http://tableless.com.br/react-javascript-reativo/)
-* [The Road to Learn React](https://leanpub.com/the-road-to-learn-react-portuguese) *(necessário conta no Leanpub ou e-mail válido)*
 
 
 #### Vue.js

books/free-programming-books-ru.md

@@ -341,7 +341,6 @@
 #### React
 
 * [Перевод документации](https://learn-reactjs.ru/home)
-* [Путь к изучению React](https://leanpub.com/the-road-to-learn-react-russian) - Алексей Пыльцын (PDF, ePub, MOBI) *(Требуется аккаунт на Leanpub или действительный адрес электронной почты)*
 * [Руководство по React](https://metanit.com/web/react) - Евгений Попов
 * [Уроки по React](https://codedzen.ru/category/uroki/react)
 * [Учебник по фреймворку React](http://old.code.mu/books/advanced/javascript/react/)

books/free-programming-books-subjects.md

@@ -217,7 +217,6 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 * [Computer Science II - Draft](http://cse.unl.edu/~cbourke/ComputerScienceTwo.pdf) - Dr. Chris Bourke (PDF) (:construction: *in process*)
 * [CS Principles: Big Ideas in Programming](https://www.openbookproject.net/books/StudentCSP/) - Mark Guzdial and Barbara Ericson (HTML)
 * [What to Look for in a Code Review](https://leanpub.com/whattolookforinacodereview) - Trisha Gee (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
-* [Your First Year in Code](https://leanpub.com/firstyearincode) - Isaac Lyman (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
 
 
 ### Computer Vision
@@ -260,7 +259,6 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 * [Elements of Data Science](https://allendowney.github.io/ElementsOfDataScience/README.html) - Allen B. Downey
 * [Internet Advertising: An Interplay among Advertisers, Online Publishers, Ad Exchanges and Web Users](http://arxiv.org/pdf/1206.1754v2.pdf) (PDF)
 * [Introduction to Data Science](https://docs.google.com/file/d/0B6iefdnF22XQeVZDSkxjZ0Z5VUE/edit?pli=1) - Jeffrey Stanton
-* [Introduction to Data Science](https://leanpub.com/datasciencebook) - Rafael A Irizarry *(Leanpub account or valid email requested)*
 * [Mining of Massive Datasets](http://infolab.stanford.edu/~ullman/mmds/book.pdf) - Jure Leskovec, Anand Rajaraman, Jeffrey D. Ullman (PDF)
 * [School of Data Handbook](http://schoolofdata.org/handbook/)
 * [Statistical inference for data science](https://leanpub.com/LittleInferenceBook/read) - Brian Caffo
@@ -491,7 +489,6 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 * [Statistics Done Wrong](http://www.statisticsdonewrong.com) - Alex Reinhart
 * [SticiGui](https://www.stat.berkeley.edu/~stark/SticiGui/) - Philip Stark
 * [Tea Time Numerical Analysis](https://lqbrin.github.io/tea-time-numerical/) - Leon Q. Brin
-* [The Elements of Data Analytic Style](https://leanpub.com/datastyle) - Jeff Leek (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
 * [The Open Logic Text](https://builds.openlogicproject.org/open-logic-complete.pdf) - Open Logic Project (PDF)
 * [Think Bayes: Bayesian Statistics Made Simple](http://www.greenteapress.com/thinkbayes/) - Allen B. Downey
 * [Think Stats: Probability and Statistics for Programmers](http://greenteapress.com/thinkstats/) - Allen B. Downey (using Python)
@@ -512,7 +509,6 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 * [10 Keys to Great Landing Pages](https://ithemes.com/wp-content/uploads/downloads/2012/09/10-keys-to-great-landing-pages-eBook.pdf) - iThemes Media (PDF)
 * [2016 European Software Development Salary Survey](https://www.oreilly.com/radar/2016-european-software-development-salary-survey/)
 * [2016 Software Development Salary Survey](https://www.oreilly.com/radar/2016-software-development-salary-survey-report/)
-* [97 Things Every Programmer Should Know - Extended](https://leanpub.com/97-Things-Every-Programmer-Should-Know-Extended) *(Leanpub account or valid email requested)*
 * [A MACHINE MADE THIS BOOK ten sketches of computer science](http://ocaml-book.com/s/popbook.pdf) - JOHN WHITINGTON (PDF)
 * [Ansible Up & Running (first three chapters)](https://www.ansible.com/ebooks) *(account required)*
 * [Asterisk™: The Definitive Guide](http://solmu.org/pub/help/Asterisk/3nd_Edition_for_Asterisk_1.8)
@@ -555,7 +551,7 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 * [Learning 30 Technologies in 30 Days: A Developer Challenge](https://blog.openshift.com/learning-30-technologies-in-30-days-a-developer-challenge/) - Shekhar Gulati
 * [Linked Data Patterns: A pattern catalogue for modelling, publishing, and consuming Linked Data](http://patterns.dataincubator.org/book/) - Leigh Dodds, Ian Davis
 * [Magic Ink: Information Software and The Graphical Interface](http://worrydream.com/#!/MagicInk) - Bret Victor
-* [Mobile Developer's Guide to the Galaxy](https://leanpub.com/mobiledevelopersguide) *(Leanpub account or valid email requested)*
+* [Mobile Developer's Guide to the Galaxy](https://leanpub.com/mobiledevelopersguide/read) (HTML)
 * [Modeling Reactive Systems with Statecharts](http://www.wisdom.weizmann.ac.il/~harel/reactive_systems.html)
 * [MSIX Succinctly](https://www.syncfusion.com/ebooks/msix-succinctly) - Matteo Pagani
 * [Networks, Crowds, and Markets: Reasoning About a Highly Connected World](http://www.cs.cornell.edu/home/kleinber/networks-book/)
@@ -701,7 +697,6 @@ Kerridge (PDF) (email address *requested*, not required)
 * [RexEgg](http://www.rexegg.com)
 * [Ruby Regexp](https://learnbyexample.github.io/Ruby_Regexp/) - Sundeep Agarwal
 * [The 30 Minute Regex Tutorial](http://www.codeproject.com/Articles/9099/The-Minute-Regex-Tutorial) - Jim Hollenhorst
-* [The Bastards Book of Regular Expressions: Finding Patterns in Everyday Text](https://leanpub.com/bastards-regexes) - Dan Nguyen *(Leanpub account or valid email requested)*
 
 
 ### Reverse Engineering
@@ -738,7 +733,7 @@ Kerridge (PDF) (email address *requested*, not required)
 
 ### Software Architecture
 
-* [A Primer on Design Patterns](https://leanpub.com/aprimerondesignpatterns) - Rahul Batra (HTML, PDF, EPUB, Kindle) *(Leanpub account or valid email requested)*
+* [A Primer on Design Patterns](https://leanpub.com/aprimerondesignpatterns/read) - Rahul Batra (HTML)
 * [Agile Planning: From Ideas to Story Cards](https://launchschool.com/books/agile_planning) - Launch School
 * [Architectural Styles and the Design of Network-based Software Architectures](http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm) - Roy Thomas Fielding
 * [Best Kept Secrets of Peer Code Review](http://smartbear.com/lp/ebook/collaborator/secrets-of-peer-code-review/)
@@ -748,14 +743,12 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Developing Reactive Microservices](https://info.lightbend.com/COLL-20XX-Developing-Reactive-Microservices_Landing-Page.html) (email address *requested*, not required)
 * [Domain Driven Design Quickly](http://www.infoq.com/minibooks/domain-driven-design-quickly)
 * [Domain-Driven Design Reference](https://www.domainlanguage.com/ddd/reference) - Eric Evans
-* [Domain-Driven Design: The First 15 Years. Essays from the DDD community](https://dddeurope.com/15years/) - Domain-Driven Design Europe ([HTML, PDF, ePub](https://leanpub.com/ddd_first_15_years/)) *(Leanpub account or valid email requested)*
 * [DSL Engineering: Designing, Implementing and Using Domain-Specific Languages](http://dslbook.org) - Markus Voelter
 * [Exploring CQRS and Event Sourcing](https://docs.microsoft.com/en-us/previous-versions/msp-n-p/jj554200(v=pandp.10)) - Dominic Betts, Julián Domínguez, Grigori Melnik, Mani Subramanian, Fernando Simonazzi ([EPUB, PDF](http://www.microsoft.com/en-us/download/details.aspx?id=34774) - [code samples](http://go.microsoft.com/fwlink/p/?linkid=258571))
 * [Guide to the Software Engineering Body of Knowledge](https://www.computer.org/education/bodies-of-knowledge/software-engineering/v3) (email adddress *requested*)
 * [How to Design Programs](http://www.htdp.org)
 * [How to Write Unmaintainable Code](http://mindprod.com/jgloss/unmain.html)
 * [Kanban and Scrum - making the most of both](http://www.infoq.com/minibooks/kanban-scrum-minibook)
-* [Kanban for skeptics](https://leanpub.com/kanbanforskeptics) - Nick Oostvogels *(Leanpub account or valid email requested)*
 * [Microservices AntiPatterns and Pitfalls](http://web.archive.org/web/20210205164251/https://www.oreilly.com/programming/free/files/microservices-antipatterns-and-pitfalls.pdf) - Mark Richards (PDF) *(:card_file_box: archived)*
 * [Microservices vs. Service-Oriented Architecture](https://www.oreilly.com/radar/microservices-vs-service-oriented-architecture/) - Mark Richards (HTML)
 * [Migrating to Cloud-Native Application Architectures](https://developers.redhat.com/books/migrating-microservice-databases-relational-monolith-distributed-data/) (email address *requested*) (PDF)

books/free-programming-books-tr.md

@@ -17,7 +17,6 @@
 * [Linux](#linux)
 * [Matlab](#matlab)
 * [.NET Framework](#net-framework)
-* [PHP](#php)
 * [Python](#python)
     * [Django](#django)
 * [R](#r)
@@ -126,11 +125,6 @@
 * [ASP.NET Core El Kitabı](https://sahin.gitbook.io/asp-net-core-el-kitab)
 
 
-### PHP
-
-* [PHP - Laravel 4 Türkçe Dokumantasyon](https://www.leanpub.com/laravel4-tr)
-
-
 ### Python
 
 * [Bilgisayar Bilimcisi Gibi Düşünmek-Python3 ile Öğrenme](https://www.ofenerci.github.io/thinkcspy-tr) - Peter Wentworth, Jeffrey Elkner, Allen B. Downey ve Chris Meyers