If anyone here is into witchcraft, what is your favorite spell-book and why?

I'm not full on into it, but, I've read a lot of them for entertainment and some "research" purposes. One I like, because it's easy to understand is 'The Enochian Workbook', written by Gerald J. & Betty Schueler. One to read just for fun is 'Necronomicon'. For some reason, it freaks people out. Have Fun!