Beginner
Easiest skill level.
Mastering Git Basics by Tom Preston-Werner
Git is the distributed version control system that's taking the world by storm. The Linux kernel, Ruby on Rails, and now even Erlang/OTP have all chosen it as their VCS of choice. This talk will focus on mastering the handful of commands that comprise 90% of the functionality you will use on a day-to-day basis.
Scala School
Scala school started as a series of lectures at Twitter to prepare experienced engineers to be productive Scala programmers. Scala is a relatively new language, but draws on many familiar concepts. Thus, these lectures assumed the audience knew the concepts and showed how to use them in Scala.
Django Girls Tutorial
This tutorial will not magically turn you into a programmer. If you want to be good at it, you need months or even years of learning and practice. But we want to show you that programming or creating websites is not as complicated as it seems. We will try to explain different bits and pieces as well as we can, so you will not feel intimidated by technology.
Typography Course by Design Lab
Remember what it was like to draw as a kid? Capture that creative spirit with our introduction to visual design. Working 1-on-1 with an expert mentor, you'll learn key concepts, and see what life's like as a designer. Perfect for boosting your resume, or kick-starting a new career.
Think Like (a) Git
When you're just getting started, something as straightforward as a merge can be terrifying. It can take a long time to really become comfortable using some of Git's more advanced features. My goal with this site is to help you, Dear Reader, understand what those smug bastards are talking about.