[andrey-g]

When you're a little bit more comfortable with Rust, Exercism (http://exercism.io/languages/rust) has a lot of cool toy problems to solve.

[kbenson]

That's really cool. I like the whole idea behind this site, and apparently I missed it the times it's been on HN in the past. I'm totally going to use this for a few languages I've been meaning to pick up (including rust).