I think that examples are maybe the most important things. Short examples can really help greatly with a lot of stuff.
Rust docs are very nice: it's important to also have all the known info about a function there, e.g. pragmas, deprecation info etc(I think it's already there) Links are good: I should be able to can click on a type of an argument and go to its doc Please don't spill too much effort on too many different kinds of doc: having 2-3 resources(API reference, manuals and some tutorials), but from high quality is more important: I'd love to help, but how: we can split stuff by topic/modules/something