I really loved using Rust but I was depressed and my creative spark was dead. Getting back to it again and having a lot of fun :) I'm on chapter three, "Common Programming Concepts", which covers Rust's implementation of a bunch of things.
I especially love the way Rust throws errors. It tells you exactly what the error is, where in your code it is, why it happens, and even gives you a suggestion about how to fix it. It's a very helpful little language!