Re: Fly Fishing reference book
Aquatic Entomology by W. Patrick McCafferty ISBN 0-86720-017-0
Think of the this as the Tao of bugs. Just about anywhere you open it, is probably something you need to know. A decent bathroom book, but mine stays in the truck. Not a book to read cover to cover, but has sections written for ecologists and Fly fishers, (human speak). Best fifty bucks I've spent on fishing.
Ultimately, it's not catching fish that satisfies, but knowing how.