free-programming-books/free-programming-interactive-tutorials-en.md

###Bash

• Learn Shell Programming

###C

• Learn C

###C#

• Learn C#

###Clojure

• Clojure Koans
• ClojureScript Koans
• Try Clojure

###CoffeeScript

• Smooth CoffeeScript, Interactive Edition

###Erlang

• Try Erlang

###Git

• Try Git
• Learn Git Branching

###Go

• The Go Tutorial

###Haskell

• Try Haskell!

###Java

• Learn Java

###Javascript

• Learning Advanced JavaScript
• Learn JavaScript
• Learn knockout.js
• Try jQuery

###Lisp

• Lisp Koans

###MATLAB

• Interactive Tutorials for MATLAB, Simulink, Signal Processing, Controls, and Computational Mathematics

###NoSQL

• MongoDB Koans
• Try Redis

###Objective-C

• Try Objective-C

###Ocaml

• Try Ocaml

###Perl

• Perltuts.com

###PHP

• Learn PHP

###Python

• How to Think Like a Computer Scientist: Learning with Python, Interactive Edition
• Learn Python
• Python Koans

###R

• Try R

###Ruby

• RubyMonk - Interactive Ruby tutorials
• CodeCademy Ruby
• Try Ruby
• Ruby Koans

###Scala

• Scala Tour

###Vim

• Interactive Vim Tutorial