Would it be appropriate to post a message in stackoverflow asking about specific resources one might recommend for learning/tutorials or even game-related methods to learn a subject? (or, is that out of bounds or off-topic?)
No. No. No.
Resource questions are entirely off-topic, not just on Stack Overflow, but essentially all of the network.
We call them shopping questions, see the Q&A is Hard, Let’s Go Shopping! blog post about them.