Comment by steveklabnik

What's easy and hard in Rust isn't the same as what's easy and hard in other languages. As a beginner, don't try to learn Rust by implementing data structures, as you need to know a lot of Rust to do it correctly. Here's an entire book on writing linked lists, for example: http://cglab.ca/~abeinges/blah/too-many-lists/book/

What did you do so far to learn? How do you learn other languages, and what other languages do you know?