This is a study in the religion of Wicca, an Earth based belief system that embraces pantheons of deities. It is written by a practicing witch who has authored several other books on the subject. Meant for solo as well as group practitioners, it takes the reader through a full year of Sabbits and holidays (for the US), and outlines rituals for them all.
The one thing that comes to mind when reading this is "Lists." There are multiple lists in this book, cataloguing everything from the days devoted to the various deities to the uses for different colored candles and scents of incense. There is an extensive glossary in the back that defines all the words used in the text, and therefore supplies a good introduction to the terminology of the religion. Relatively short but thorough, this is a good reference book for any who wish to follow the belief system as well as those who study it.