I am a newbie who's a sub. Fiction about subs that I've enjoyed includes Mr. Benson by John Preston, The Frog by Claire Thompson (about an unwilling sub) and any book by Stephen Elliott. I also recommend the Marketplace series, as one person above did. If anyone on this thread can recommend books that do a job of covering verbal humiliation or offer good examples of same, those titles would be of interest (to me, at any rate).