The Rust Programming Language
I just finished re-reading The Rust Programming Language by Steve Klabnik and Carol Nichols, with contributions from the Rust Community. Terrific!

This was an online book club with Rust & C++ Cardiff. All of the videos are online. We took turns leading a session on each chapter. I did chapter 18: Patterns and Matching (it starts about 50 minutes in). My slides are online as well.
This was a fantastic experience! Everyone at Rust & C++ Cardiff is so nice and the book is really good. Most book clubs I've been in are for reading novels. It was fun reading a technical book in a club!
By the way, this is "the book," the official documentation that comes with Rust. If you installed Rust with rustup, you already have a copy on your hard drive, which you can read by running
rustup doc --book
There's lots more documentation included with Rust too. Run rustup doc --help
to see a list.