well it's not a book but there's a great article in the September issue of Cosmo entitled "50 sex tips". it's a complete guide to the cock and the sex tips are all about touching, teasing, licking, sucking, etc. i only scanned the article because why ruin 50 great surprises. my Mistress is reading and learning. to read more about O/our experience with one of the sex tips check out my journal at http://www.chastitymansion.com/forum/showthread.php?p=25193#post25193