WordNet
sex manual
n. a manual containing instruction in sexual techniques; intended to enhance the reader's sexual life
Wikipedia
Sex manual
Sex manuals are books which explain how to perform sexual practices; they also commonly feature advice on birth control, and sometimes on safe sex and sexual relationships.
Usage examples of "sex manual".
Cripes, the man had single-handedly run the country during the Turn, and he had enough time to write a vampire sex manual, too?
He'd been much more taken with The Joy of Frogs, a sex manual where all the illustrations featured cartoon frogs going at it in unusual and inventive ways.
The selection was as varied, and as tempting, as the index of a sex manual.