This book is informative, but don't expect 101 positions. The book has many variations of the same position, which gives it the 101 positions. I was a little disappointed, as there really wasn't anything I wasn't expecting to see in terms of positions that I wasn't aware of. But all in all, if your in a funk and need a memory jogger this is a good book with good pictures demonstrating the positions without being smutty feeling. The pictures allow you to thoroughly grasp the positions without focusing on the male and female organs that would take away from the real intent of the book.