I've been wondering about that: A course that starts with TDD and builds the program/app from that, iterating on both sides. I'm interested in TDD but didn't f

I've been wondering about that: A course that starts with TDD and builds the program/app from that, iterating on both sides. I'm interested in TDD but didn't find a course/guide that would teach how to do it properly... Maybe I didn't search enough... Can you recommend me anything like that? It doesn't have to be React related.