it depends on what you're looking for really. are you starting Wicca, Shamanism, Hoodoo, or just generic Witchcraft? myself, Wicca for Life by Raymond Buckland and Wicca: a Guide for the Solitary Practitioner by Scott Cunningham are great books, and those two are the most common authors you'll hear about. it does really come down to what you want to study really. personally, i'd avoid books by Silver Ravenwolf and D.J. Conway, at least for the first year.
if you want to study healing, while you still need basics, it again comes down to what type, herbs, energy, crystals so on. Reiki's getting rather popular. look into energy work though before going out for healing. while meditating [rather important] try to feel the flow of energy in your body. try to feel energy enter and leave your body. energy is the key to magic.