“101 Curses: Curses for All Occasions” by Augustus Numley

"A diabolical collection of the most sinister curses you're likely to ever encounter. Organized by category, they've been gathered from various undocumented sources and mostly use simple materials. Some of these curses are pretty nasty and could be harmful to the practitioner as well as the intended victim.

If you want to turn someone you know into a werewolf this book will tell you how. That's curse #25."