I keep track of books that I want to read and books that I want to know more about - it's not a nice neat list though. I fill small notepads with notes on all kinds of things: shows, books, movies, music, etc, that I might be interested in, recipies to try, I plan out what I'm going to eat for a week or two or whatever length fits the amount of food I have, what shows I want to watch during the week. It's all blended together, right along with the books I want to read and books I want to know more about.