FWIW, I've found the Guide incredibly helpful, and in general found the docs very satisfying. (Although I do wish the pointers guide was more complete :) )

The API docs + search in the docs are incredible IMO. I'm in absolute love with rustdoc. Having links to the source right there is the most valuable thing ever, both when trying to understand how to use a given API, and when trying to write similar things its really useful to be able to look at how others have done things.