- NodeSchool Contains essential skills for working with Node.js
- Visualgo
Visual learning tool for a bunch of Algorithms and Data Structures. - Sorting Algorithm Animations
Animated demos of Insertion, Selection, Bubble, Shell, Merge, Heap, Quick, and Quick3 sorts, with an explanation of how they work.
- Try Git
Never tried git? This interactive tutorial is for you! - Github Git Cheatsheet
(PDF) Helpful for those who haven't quite memorized the more frequently-used git commands. - Atlassian's Git Tutorials
- Git Tips From The Trenches
For those who want to elevate their version control game. This is a list of neat commands, configs, and neat tricks. - Keeping a Github Fork Updated
For those starting to contribute to Open Source, or those starting their first Big Kid Software Engineering Project, where one has to git along with others (not sorry for pun). - Git Manual
Precise and nitpicky, but this is basically an official manual, so that's par for the course.
Style Guidelines: I like keeping lines at 80 characters max. The frequent exception will be lines that have to contain long URL's.