If you want to learn more, you already have everything you need. The documentation that comes with Rust is truly outstanding. In particular, there is the book.
The Rust Programming Language (aka, "the book") is a free guide to the language that comes with it. It is remarkably well done. Whether you read it cover-to-cover or jump around haphazardly, you should definitely read it. You can view a local copy with
rustup docs --book, even when you're offline. You can also buy an ink-on-paper copy if you prefer.
You can see lots of other great docs that come with Rust by running
Also coming soon is Rust in Action by Tim McNamara. I have been reading the electronic early-access version for some time. It takes a project-based approach, which is a little different.
- Tim McNamara gave a nice talk at Linux Conf Australia 2020.