Like most of you, I've got an extensive library. In it are several books that I wish I'd known more about before spending the money for them. What I've attempted to do here is give you my top recommendations for the most helpful books I've found, so that you don't make the same mistakes. First, though, the best places to find books and plays that are theater based. This is THE theater book club.
Membership is easy, just order books and promise to buy more.
At these prices, it's not a burden. Most of the books listed on this page can be found there for even less than Amazon charges. Most of them can be found at one of these two sites, since they are the largest publishers of plays in the world. You can now order them online and they'll be delivered within a couple of weeks. Literally, everything you need to know to survive as an actor in Los Angeles.