As someone interested in making some indie games, any courses you'd recommend?

I'm always looking for a weirdly.. medium level explanation of things. I specifically focus Rust, and use Rust game frameworks (because they interest me), but i often find i need more information than the framework level tutorials explain.. but not necessarily "write everything from scratch in C".

Maybe i'm wrong, maybe i as a person do need everything-from-scratch to wrap my head around everything. It just feels like so often frameworks assume so much more domain knowledge than i have. Yet most books/courses/etc are binary. They're either super deep, or super light.

Are there medium courses? Are medium courses even possible?