Incidentally, in my opinion, The Rust Book was laid out exceptionally well for system programming beginners, at least in the state I read it through about 8 years ago or so. Steve and contributors managed to achieve a great balance between thoroughness and approachability of the text while dodging the curse of knowledge in a commendable way.
However, The Rust Book is as far from Concepts as it is from HTDP. It presents a specific language model in its relation to the hardware and common applications one faces while implementing what Concepts and HTDP teach to, well, design.
Like: what’s different from just “the rust programming language” (which is obviously not a beginner text, just trolling).