Tim Heaney: Ziglings (opens in new tab)

I just completed Ziglings! It's wicked fun! Zig is a programming language and Ziglings is a collection of fun exercises to help you learn it. I heard about if from this interview with Andrew Kelley. He is the creator of Zig (but not the creator of Ziglings, that's Dave Gauer). Zig is still under development (it has yet to release version 1.0), so it's changing a lot and Ziglings is changing right along with it.