I'd been waiting for beta to drop to do a re-organization of the TOC of the book. You can see it on nightly here: http://doc.rust-lang.org/nightly/book/
I've carved out a whole section, "Effective Rust", specifically for this kind of thing. I'm looking for a better name than "Effective Rust", since that's a very common book title, though. Don't want to be too greedy with that namespace!
We do also have Rust by Example, but I admittedly don't give it as much love. Once the book is done...