The book is designed to be a lighthearted insight into ways of experimenting with sex and pleasuring your partner, whilst at the same time reducing the risk of pregnancy and STDs. It's not a manual, but a guide for those that may want to experiment with sex to show that intercourse isn't the most important factor. There are other ways of enjoying each other's body whilst minimizing the risk of unwanted pregnancy and STDs. It's aimed at teenagers from early teens upwards.
Many parents find it difficult to talk to their kids about sex. It may be they think there is an age when this should be done and just never get around to it. It may be the child passes that age in maturity before they reach it in years--in which case by the time the parent gets around to "the talk," the child is actually too old and the parent just doesn't bother. Often the child will insist, "I already know all that," so the parent doesn't bother.
They may think they know. It may be they know what their friends have mentioned or discussed together. Either way, unless you know what they know, you can't be sure that they do. This book may help parents if they find themselves in any of these situations.