* Added the React.js Succinctly.
* Update free-programming-books.md
* Included the Flutter, Azure Functions and Elixir Succinctly.
* Added two more books under flutter.
* Update deprecated links to Google's Android courses
* Renaming link to codelab in alphabetical order
* Rearrange in alphabetical order
* Remove Android Developer Fundamentals from books
* Add Android Developer Fundamentals to courses list
* add introduction to Ada course book
* Change book to add
Add Ada for the C++ or Java Developer book instead.
* add author name to an ada book
* Update free-programming-books.md
* IPv6 for IPv4 Experts english has been added
* IPv6 for IPv4 Experts russian has been added
* IPv6 for IPv4 Experts russian URL change
* IPv6 for IPv4 Experts english URL change
* remove 2 ebook of [Linkers and Loaders], [Learn Python The Hard Way]. ref issue:#3091, #3062
* Fix Issue: #2993, Add book The Black Art of Programming.
* fix author name
* Add Ruby Tutorial For Beginners
Hi,
This adds a new free Ruby tutorial (HTML version), **optionally** visitors can download a PDF version of the book by entering an email address.
## What does this PR do?
Add Resource
### Description
Free Ruby tutorial / book for beginners in HTML format with multiple lessons, including installing Ruby, conditionals, loops & object-oriented programming.
### Why is this valuable
It's a complete Ruby tutorial for beginners that helps learn Ruby from scratch. Includes examples, clear explanations & exercises.
### How do we know it's really free?
I made it.
### For book lists, is it a book?
Yes.
### Checklist:
- [x] Not a duplicate
- [x] Included author(s) if appropriate
- [x] Lists are in alphabetical order
- [x] Needed indications added (PDF, access notes, under construction)
* Use Full Book Name
* Update free-programming-books-es.md
Add Piensa en Perl 6 (Spanish translation of Think Perl 6)
* Update free-programming-books.md
Add another Perl 6 book. Nowadays Perl 6 is also known as Raku (https://marketing.perl6.org/id/1541379592/pdf_digital) and the name Rakudo refers to the only major Perl 6 compiler at the moment. Also update status of 'Using Perl 6'.
* Update free-programming-books.md
Alphabetize list
* add space to satisfy linter
* Update free-programming-books-es.md
* Link directly to O'Really PDFs
O'Reilly has been changing up some of these links, redirecting you to a rather scarce hub.
But they are still hosting the files.
This change is justified by the file still being publicly hosted.
* Fix annotation for linter
* I guess the linter wants PDF capitalized
Dzmitry Lahoda
Karthikeyan A K
prabakaranr
Boro Sitnikovski
Aayush Bisen
Øyvind
Maïeul Rouquette
zach valenta
Marvin Danig
cynic
nick bouldien
Collins Zimba
Kaleem Ullah
Ye Shu
Ryan D Holm
Momozor
Sumo99
Nicola Dall'Asen
Victor Λntonio
Jeeva Subburaj
Mikhail Vasilyev
umanovskis
Ramiro Gómez
zhongjiajie
Tiago Athayde
Patrick Cozzi
Sekito Lv
Desmond
Jesus Castello
ranwise
Luis F. Uceta
Danielly Costa
Dan Minshew
cwfoo
Stephen Fox