The bfnightly tutorial is a very good tutorial, but I do want to warn that it's not always terribly idiomatic Rust: Herbert was using the writing of the tutorial as a way of practicing Rust, so there are places where the explanations aren't quite correct and other places where the code isn't what an experienced Rust programmer would write. An example that jumped out at me (this from Chapter 8) was the use of

    &s.to_string()

which is an expression that could be shortened to just s. (Specifically, s has type &str, calling to_string() on it converts it to a String, and borrowing it allows it to be coerced back to a &str but now with unnecessary copying.) Elsewhere (this from Chapter 3) it has explanations like

> Copy and Clone allow this [type] to be used as a "value" type (that is, it just passes around the value instead of pointers)

which is also not a correct explanation, or at least is a misleading one: things can still be passed by value even without Copy and Clone and without any pointers at all. (Arguably, he meant, "You can share the value without using borrows," but that's not what the explanation said.)

That said, all this is nitpicky (and I suspect that Herbert would be receptive to feedback along these lines—I just haven't had a chance yet to provide it!) because the tutorial's explanation of roguelike-writing is still very good, and in fact I've been following it as a guide for writing a tutorial on top of a different Rust library myself! But I do want to warn about using it as a model for learning Rust specifically.