As Jeremy implied, there are a heck of a lot of books on fishing available. I particularly like Gapen’s books because he talks specifically addresses fishing on rivers…it is not just a chapter. He covers ideas from very small to very large rivers. His books are not for the “techie fisherman”. He interjects many stories and folklore and sometimes you are wondering if you are reading a novel. The first book I read by Gapen was “River Fishing – A Happy World”. When we were first learning the Mississippi I had my fishing partners read it also. It certainly gave us a good start.
As I said, his writing style is not for everyone…I like it because it reads sometimes meanders, just like the rivers he writes about.