The documentation (link above) contains brief bites of "getting started" definitions, examples, and exercises for those beginning to learn Rust.
The intent is that each bite will contain a small number of pages in some tightly focused area, and may, eventually be accompanied by a 10 to 15 minute video.
Visit the link, above for access to existing materials - the RustBite chain is almost complete.
Some of the sample code from the bytes is stored in this repository. That is migrating to playground links found here:
See RustBites documentation link above for complete list of Bites.