code-bug:

I was asked to make a masterpost on websites like Codecademy, so I’ve tried to compile a list of the best (and mostly free!!). In no particular order: 

1. Codecademy [x]

I couldn’t not include Codecademy! Just in case you haven’t checked it out, it’s pretty neat. It has courses for learning languages and web developer skills.

Languages: Python, Ruby, Java, PHP, jQuery, JavaScript, HTML/CSS

Extras: Git, SQL, Command Line, AngularJS, Ruby on Rails

2. Code School [x]

This is pretty similar to Codecademy with the in-browser coding and such. It also has additional features like teaching videos. A good introduction to programming languages.

Languages: Python, Ruby, Javascript, HTML/CSS

Extra: iOS development with Objective-C or Swift, Git, SQL

3. Learnaroo [x]

Has tutorials followed by mini challenges based on the concepts you’ve just learnt! It also has some reference pages called “Learn x by Example”. Looks pretty good.

Languages: Python, Java, Ruby, HTML/CSS

Extra: Algorithms, Mathematics, + a bunch of premium membership stuff

4. Learn … 

A set of related websites (see below) which have mini tutorials on language concepts followed by mini challenges, similar to Learnaroo.

Languages: Python, Java, C, C#,  JavaScipt, PHP, Shell

5. Code Combat [x]

Basically, it turns learning to code into a game! As you move through the levels, new concepts are introduced, so the code you need to write to play the game gets harder. 

Languages: Python, Java, JavaScript, CoffeeScript, Clojure, Lua

6. Codingame [x]

Similar idea to Code Combat, but a little more advanced. 

Languages: Python, Java, Ruby, C, C++, C#, Haskell, VB … there’s actually loads it supports.

7. Code Wars [x]

This is more for ‘training’ with a language you already know. It offers plenty of practice through challenges, so it’s really good for improving your coding skills. 

Languages: Python, Ruby, Java, C#, Haskell, JavaScript, CoffeeScript, Clojure

8. Coderbyte [x]

This offers some video tutorials and challenges for a few languages, plus special courses on specific algorithms and bootcamp/interview prep. You need a premium membership for quite a lot of things, though (e.g. I don’t think you can watch any of the videos with a free membership).

Languages: Python, Ruby, JavaScript

Extras: Algorithms, Bootcamp Prep, Job Interview Prep

9. Free Code Camp [x]

Mini tutorials followed by mini challenges. Has a number of courses on the languages below!

Languages: HTML/CSS, jQuery, JavaScript

Extras: Git, Algorithms, + a bunch of projects to complete

10. Programmr [x]

Has courses to learn various languages through doing little exercises/challenges in the browser, similar to previous examples. Also has ‘zones’ for more languages, where you can find challenges, example code and projects people have shared. 

Languages: Python, Java, C++, C#, PHP, jQuery

11. CheckIO [x]

Only offers Python, but I still think it’s really great. You move from level to level, getting challenges which are gradually trickier. Learn by doing!

12. Rails for Zombies [x]

For people who already know a bit of Ruby, but nothing about Ruby on Rails!  Each level begins with a short video followed by interactive challenges where you program Rails in the browser.

That’s all (for now!) Hope this is helpful! (ﾉ^∇^)ﾉﾟ