Lighting the Nude, the book, is a very good source for those who want to go into this kind of photography. It is especially essential if you are just starting out: each photo has the accompanying set up and, at times, the photographer even makes his own comments - a how-to book with illustrations on the set up used always rank high for me.
The book also gives recommendations on how to pose your subjects, the props that can be used, and the kinds of dresses your models can wear.
As of now, I have no plan of getting into nude photography, but, I find that this book will be a big help if ever I go into it. The lighting ideas in the book can also be used even if your subject is fully clothed. And of course, one step down, boudoir photography, will also benefit from whatever you will learn from this.
Lighting the Nude is a very good book and is very helpful in portraiture photography, not just the nude.