Anyone know any good books on witchcraft and/or shamanic magic?

Angel Tech – A modern Shaman’s guide to reality selection by Antero Alli
It says modern, so its more fun than reading some grimoires or blackbooks (BOSs).

Italian Witchcraft By Raven Grimassi

Christopher Penczak’s “Temple of Witchcraft” series:
http://www.amazon.com/s/ref=nb_ss_b?url=search-alias%3Dstripbooks&field-keywords=temple+of+witchcraft
Ronald Hutton’s “The Triumph of the Moon”
http://www.amazon.com/Triumph-Moon-History-Modern-Witchcraft/dp/0192854496/ref=sr_1_5?ie=UTF8&s=books&qid=1244226803&sr=1-5

I am afraid I have studied this subject only indirectly, as it has popped up in my other studies, but perhaps folklore about witchcraft might be helpful:
http://books.google.com/books?q=witchcraft+folklore&spell=1&oi=spell
Also try searching under other names, such as bruja and brujaria. We of European descent have attached the names witchcraft and shamanism to a lot of practices that the native people would never call witchcraft or shamanism.
I second the above mention of Ronald Hutton. I haven’t read that book, but I have read other work by him.