Re: Fly Fishing reference book
I always recommend "The Orvis Streamside Guide to Trout Foods and Their Imitations" to folks who tell me they want to learn to flyfish. I can teach most people the basics of casting in less than an hour, but learning which fly to use where is more difficult for most.
BTW, I teach casting the way Lefty Kreh ('s books) taught me. His instruction from Lefty's Little Library added 20' to my casts. I always recommend these books to newbies.
If you see Kreh's "Fly Fishing in Salt Water" on the shelf, pick it up and read the Introduction by Frank Woolner and prepare to be amazed!