Don't forget the internet. Almost all the high profile magazines have a full web based help system. I have printed off tons of articles on various topics around everything from bass to flyfishing. Then, I hole punched and keep them organized in a three ring binded essentially making my own books. I search everything from basic sites to specific ask a pro questions on their web page forums. It is a lot of paper work and hours searching to start but worth it in contrast to finding the perfect book.
I also have an mp3 player with podcasts on it. I will listen to it mowing grass, working on projects, in the car and when ever in the mood. There is bass fishing and fly fishing techniques a plenty on there.
Here are a few I used:
BassResource.com
BassFeed.com (articals & podcasts)
Orvis.com (articles & podcasts)
Askaboutflyfishing.com (podcasts)
I know I probably need to go into some sort of 12 step program.
When you stop learning you stop growing as an angler.