Ian Kerner has a PhD in sexology and is a licensed psychotherapist who specializes in sex therapy. He founded the site goodinbed.com, which collects insights from leading sex and relationship experts. He has also written He Comes Next: The Thinking Woman's Guide to Pleasuring a Man.
She Comes First (2004) is a guide to improving a woman’s sexual experience through the act of cunnilingus. It emphasizes the value of the female orgasm and argues for a reduced focus on penetration.
He Comes Next (2006) is the ultimate guide to understanding the desires of men and the intricacies of their sexual response process. This understanding that can help bring more pleasure than your male sexual partner has ever experienced before. These are tips that can help you touch his heart and know what to do when you’re touching his other parts.
Passionista (2008) is a guide to understanding male sexuality and satisfaction. It offers answers to the questions partners may have – and shows that giving pleasure can be just as fun as receiving it.