Wicca and Witchcraft For Dummies
As an introduction this approaches the slippery subject of Wicca quite well. It's more about Wicca than witchcraft and the topic of witchcraft is treated more as a sub-set of Wicca than a seperate topic. It's one of those books that isn't bad to read when you've read some other books because it gave me a feeling of ah-ha about certain topics.
Not incredibly in-depth, but then again it isn't ment to be, it is an interesting introduction to the topic and while I did disagree with some of it that was more on a personal level than actual disagreement. It's also quite amero-centric, there is little mention of how to find others outside the US, but that's a fairly minor issue in this quite substantive book.