The dreaded "list of resources" questions have come up during the recent scope discussions. One answer to the question is that they shouldn't be handled at all, but I strongly believe that there is a lot to be gained by allowing at least a limited amount of this.
The origin of all greatness, Stack Overflow, has e.g. this https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list, which is very useful for a C++ programmer. A list for different instruments, going from beginner to expert, would be similarly useful for people playing those instruments. I have purchased books from scattered recommendations on this site, so the knowledge is there.
First thing is to decide if it should be allowed, and then if we want to go forward, in what forms it should be allowed.
(I know there are questions around this topic on the Meta already, but I didn't find one that matched this one completely.)