If you were ever wondering what books to read that pertain to Voodoo and Hoodoo I suggest these following books by Catherine Yronwode
Hoodoo Herb and Root Magic: A Materia Magica of African-American Conjure
The Art of Hoodoo Candle Magic in Rootwork, Conjure, and Spiritual Church Services
Throwing the Bones: How to Foretell the Future with Bones, Shells, and Nuts