""The Exercise of Occult Powers"" by Edward Smedley is a comprehensive guide to the practice of occultism. The book covers a wide range of topics, including the history of occultism, the principles of magic, divination, astral projection, and the use of talismans and sigils. Smedley provides practical advice on how to develop and harness one's own occult powers, and also includes a number of exercises and rituals for readers to try out. The book is...