Did you ever notice that most ‘relationship’ books (euphemism for improving your sex life) seem to be directed at only half the team? Just like in football, there’s two sides, and you need both of them to win the game. No, sex isn’t a game, but wouldn’t it make a lot more sense to have one sensible book that could be easily read by both sides? Separately – or together.
Keeping It Up is a slender (and very inexpensive!) book and is the closest I’ve ever found to being a complete guide. Granted it’s primarily aimed at the male half, but the author strongly encourages reading it together, or taking turns at reading it. Makes a lot of sense to me.