The first book I ever read about the biz was Raw Talent by Jerry Butler. Ahead of its time. Jenna's book was better than I thought it would be. Ron Jeremy's book sucked. Read Prisoner of X:20 Years in the Hole at Hustler Magazine by Allen McDonnell. It's good. Not to get all faggy on you, but this was real good too:

http://www.amazon.com/Wonder-Bread-Ecstasy-Death-Stefano/dp/1555833837
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"I'll never forget the moment during the lovely Alyssa Allure's scene in 'American Bukkake' where the fellow got out of his wheel chair to ejaculate on her face. It was grotesque but had a certain frisson." -Sock