Let's Get Rusty (letsgetrusty.com) is a Rust-focused teaching brand publishing comprehensive Rust course material aimed at developers picking up the language seriously. The brand has been one of the more active independent Rust educators online during the language's mainstream-adoption surge.
The CourseFlix listing carries the Rust Developer Bootcamp — a comprehensive Rust curriculum covering the language from fundamentals through to the production patterns that show up in real Rust applications: ownership, lifetimes, async / Tokio, the trait system, and the patterns for building maintainable Rust codebases.
Material is paid and aimed at developers picking up Rust as a serious primary or secondary language. For broader content, see CourseFlix's Rust category page.