Well, I've read enough books on music theory to sit through a music theory 4 class (for a bachelors program at a college for a weekend thing) without learning anything I didn't already know. I had to restrain myself from correcting the professor as well; he was talking about tuning theory, and he not only claimed that Bach used equal temperament, but got his terminology mixed up as far as commas go.
I know less about orchestration, but I'm learning; inter-library loan is an awesome thing.
“If you want to get laid, go to college. If you want an education, go to the library.” - Frank Zappa