Watch VoirFilms. Best-selling author and practicing witch Deborah Gray presents a beginner's guide to witchcraft in this how-to documentary, providing intriguing lessons on casting spells, using charms, blending potions, reading the phases of the moon and more. With her soothing presence and easy-to-follow instruction, Gray recounts the history of witchcraft in Egypt, Europe and Britain and shows how the ancient art can be put into modern practice.