### Index
* [Ada ](#ada )
* [Android ](#android )
* [Bash ](#bash )
* [C ](#c )
* [C# ](#c-sharp )
* [C++ ](#c-1 )
* [Clojure ](#clojure )
* [Cloud Computing ](#cloud-computing )
* [CoffeeScript ](#coffeescript )
* [Erlang ](#erlang )
* [Git ](#git )
* [GLSL ](#glsl )
* [Go ](#go )
* [Haskell ](#haskell )
* [HTML / CSS ](#html--css )
* [Java ](#java )
* [JavaScript ](#javascript )
* [Angular.js ](#angularjs )
* [Kotlin ](#kotlin )
* [Language Agnostic ](#language-agnostic )
* [Operating Systems ](#operating-systems )
* [Lisp ](#lisp )
* [MATLAB ](#matlab )
* [Node ](#node )
* [NoSQL ](#nosql )
* [Objective-C ](#objective-c )
* [Ocaml ](#ocaml )
* [PHP ](#php )
* [Python ](#python )
* [Ruby ](#ruby )
* [Rust ](#rust )
* [Scala ](#scala )
* [SQL ](#sql )
* [Vim ](#vim )
### Ada
* [Introduction to Ada ](https://learn.adacore.com/courses/intro-to-ada/index.html )
### Android
* [Javatpoint Android Tutorial ](https://www.javatpoint.com/android-tutorial )
### Bash
* [Help messages will explain everything ](https://explainshell.com )
* [Learn Shell Programming ](http://www.learnshell.org )
### C
* [Learn C ](http://www.learn-c.org )
### C Sharp
* [Codeasy ](https://codeasy.net/course/csharp_elementary )
* [Learn C# ](http://www.learncs.org )
### C++
* [CppKoans ](https://github.com/torbjoernk/CppKoans )
### Clojure
* [4Clojure - Koans ](http://www.4clojure.com )
* [Clojure Koans ](http://clojurekoans.com )
* [ClojureScript Koans ](http://clojurescriptkoans.com )
* [Try Clojure ](http://www.tryclj.com )
### Cloud Computing
* [AWS API Gateway ](https://run.qwiklabs.com/focuses/269?catalog_rank=%7B%22rank%22%3A3%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605949 ) - *registration required*
* [AWS Identity and Access Management (IAM) ](https://run.qwiklabs.com/focuses/7782?catalog_rank=%7B%22rank%22%3A6%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605942 ) - *registration required*
* [AWS Lambda ](https://run.qwiklabs.com/focuses/6431?catalog_rank=%7B%22rank%22%3A2%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605949 ) - *registration required*
* [AWS Simple Storage Service (S3) ](https://run.qwiklabs.com/focuses/7860?catalog_rank=%7B%22rank%22%3A3%2C%22num_filters%22%3A0%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3597563 ) - *registration required*
* [Google Cloud Platform ](https://cloud.google.com/training/free-labs/ )
### CoffeeScript
* [Coffeescript Style Guide ](https://github.com/polarmobile/coffeescript-style-guide/blob/master/README.md )
* [Smooth CoffeeScript, Interactive Edition ](http://autotelicum.github.io/Smooth-CoffeeScript/interactive/interactive-coffeescript.html )
### Erlang
* [Try Erlang ](http://www.tryerlang.org )
### Git
* [git-game ](https://github.com/git-game/git-game )
* [git-game-v2 ](https://github.com/git-game/git-game-v2 )
* [Githug ](https://github.com/Gazler/githug ) (Tutorial in shell)
* [Learn Git Branching ](https://learngitbranching.js.org )
* [Learn Git with Bitbucket Cloud ](https://www.atlassian.com/git/tutorials/learn-git-with-bitbucket-cloud )
* [Try Git ](http://try.github.io )
### GLSL
* [The Book of Shaders ](https://thebookofshaders.com )
### Go
* [Go Koans ](https://github.com/cdarwin/go-koans )
* [The Go Tutorial ](http://tour.golang.org )
### Haskell
* [Try Haskell! ](http://tryhaskell.org )
### HTML / CSS
* [CSS Diner ](http://flukeout.github.io )
* [Flexbox Defense ](http://flexboxdefense.com )
* [Flexbox Froggy ](http://flexboxfroggy.com )
* [Grid Garden ](https://cssgridgarden.com )
* [Learn by doing beginner projects ](https://dash.generalassemb.ly )
* [Learn HTML & CSS interactively ](https://www.codecademy.com/learn/web )
* [Prototyping a professional website ](https://www.codecademy.com/learn/make-a-website )
### Java
* [CodingBat code practice ](http://codingbat.com/java )
* [Java at Codecademy ](https://www.codecademy.com/courses/learn-java )
* [Learn Java ](http://www.learnjavaonline.org )
* [Learneroo Java tutorial ](https://www.learneroo.com/modules/11 )
### JavaScript
* [ABC of JavaScript : An Interactive JavaScript Tutorial ](http://www.openjs.com/tutorials/basic_tutorial/ )
* [Codecademy jquery track ](https://www.codecademy.com/learn/jquery )
* [ES6 Interactive Guide ](http://stack.formidable.com/es6-interactive-guide/#/ )
* [Functional Programming in Javascript ](https://github.com/ReactiveX/learnrx )
* [Javascript interactive tutorial on CodeCademy ](https://www.codecademy.com/learn/javascript )
* [JavaScript interactive tutorial on CoderMania ](http://www.codermania.com/javascript/lesson/1a/hello-world )
* [Javascripting ](https://github.com/sethvincent/javascripting )
* [Learn JavaScript ](http://www.learn-js.org )
* [Learn knockout.js ](http://learn.knockoutjs.com )
* [Learning Advanced JavaScript ](http://ejohn.org/apps/learn/ )
* [Try jQuery ](http://try.jquery.com )
#### Angular.js
* [Angular Basics ](http://www.angularjsbook.com )
* [AngularJS - Step by Logical Step ](http://nicholasjohnson.com/angular-book/ )
* [egghead.io: Learn AngularJS with Tutorial Videos & Training ](https://egghead.io )
* [Learn AngularJS with free interactive lessons ](http://www.learn-angular.org )
### Kotlin
* [Kotlin tutorial ](https://kotlinlang.org/docs/tutorials/ )
### Language Agnostic
* [CodeCombat ](http://codecombat.com ) - Python, JavaScript, CoffeeScript, Clojure, Lua, Io
* [Codility ](https://codility.com/programmers/ )
* [Python Tutor ](http://pythontutor.com ) - Python, Java, JavaScript, TypeScript, Ruby, C, C++
* [The Fullstack Tutorial for GraphQL ](https://www.howtographql.com )
#### Operating systems
* [Learning operating system development using Linux kernel and Raspberry Pi ](https://github.com/s-matyukevich/raspberry-pi-os ) - Sergey Matyukevich (:construction: *in process* )
### Lisp
* [Lisp Koans ](https://github.com/google/lisp-koans )
### MATLAB
* [Interactive Tutorials for MATLAB, Simulink, Signal Processing, Controls, and Computational Mathematics ](http://www.mathworks.com/tutorials )
### Node
* [Node School ](http://nodeschool.io )
### NoSQL
* [MongoDB Koans ](https://github.com/chicagoruby/MongoDB_Koans )
* [Try Redis ](http://try.redis.io )
### Objective-C
* [Try Objective-C ](http://tryobjectivec.codeschool.com )
### Ocaml
* [Try Ocaml ](http://try.ocamlpro.com )
### PHP
* [CodeCademy PHP ](https://www.codecademy.com/learn/php )
* [Learn PHP ](http://www.learn-php.org )
### Python
* [Codecademy Python course ](https://www.codecademy.com/learn/python )
* [How to Think Like a Computer Scientist: Learning with Python, Interactive Edition ](http://interactivepython.org/courselib/static/thinkcspy/index.html )
* [Learn Python ](http://www.learnpython.org )
* [Learn Python Step by Step ](http://www.techbeamers.com/python-tutorial-step-by-step )
* [Python for Everybody - Interactive ](https://runestone.academy/runestone/books/published/py4e-int/index.html ) - Barbara Ericson
* [Python Koans ](https://github.com/gregmalcolm/python_koans )
### Ruby
* [CodeCademy Ruby ](https://www.codecademy.com/learn/ruby )
* [Ruby Koans ](http://www.rubykoans.com )
* [The Odin Project ](http://www.theodinproject.com )
* [Try Ruby ](http://tryruby.org )
### Rust
* [Rustlings ](https://github.com/rust-lang/rustlings )
### Scala
* [A Tour of Scala - an interactive scala tutorial ](https://scalatutorials.com/tour/ )
* [Scala Exercises ](https://www.scala-exercises.org )
### Selenium
* [Selenium Tutorial - Web Automation ](http://www.techbeamers.com/selenium-webdriver-tutorial )
### SQL
* [SQL at Codecademy ](https://www.codecademy.com/courses/learn-sql )
* [SQLBolt ](http://sqlbolt.com )
### Vim
* [Interactive Vim Tutorial ](http://www.openvim.com/tutorial.html )
