I read Trout Tactics by Joe Humphries also. It's extremely technical and specific. If you want to know EXACTLY how to rig your nymph, this is your book. On the other hand, it's sooo technical, you may get the impression you'll need to take the book along with you the next time you fish. Unless you get another recommendation, I'd go with this one. Just remember that it doesn't take a Ph.D. to catch a trout.