The following books get an honourable mention even though they aren’t actually in mdbook format:
- A half-hour to learn Rust
- An Introduction to Chip-8 Emulation using the Rust Programming Language
- Learn Rust the Dangerous Way
- The Rust FFI Omnibus
- Tokio Tutorial - event-driven, non-blocking I/O
- Writing an OS in Rust
For more books in other formats, see Rust Books.