Other Rust Resources has dated link

On page https://google.github.io/comprehensive-rust/other-resources.html#unofficial-learning-material
Under the heading "Unofficial Learning Material"

[Ferrous Teaching Material](https://ferrous-systems.github.io/teaching-material/index.html): a series of small presentations covering both basic and advanced part of the Rust language. Other topics such as WebAssembly, and async/await are also covered.

Top of linked page gives you:

> Ferrous Teaching Material
> This material has moved!
> This is the published version of https://github.com/ferrous-systems/teaching-material. That repository is now Archived and this website is no longer updated.
>
> Our slides are now developed at https://github.com/ferrous-systems/rust-training. If you wish to view the slides, you can download rendered, versioned, zip bundles from https://github.com/ferrous-systems/rust-training/releases.
>
> Our exercises (or assignments) are now developed at https://github.com/ferrous-systems/rust-exercises. You can browse the worksheets in Github, or clone the repository to have access to the templates and solutions.