1973 2nd Impression of this title is one of the earliest works by noted and prolific writer about the occult, J.H. Brennan. Reference book has eighteen chapters that cover topics of high and low magic.
James Herbert "Herbie" Brennan is a lecturer and the author of over one hundred fiction and non-fiction books for adults, teens, and children.
His works have been translated into approximately fifty languages, he has also written books on the Occult and New Age. He initially trained in esoteric teachings and Qabalah with the Fraternity of the Inner Light, and later became associated with Dolores Ashcroft-Nowicki and the Servants of the Light.
In 1995 he contributed two novels to the Horrorscopes series under the house pen name Maria Palmer.
In 2003, Brennan published the children's book The Book of Wizardry: The Apprentice's Guide to the Secrets of the Wizards' Guild under the pseudonym Cornelius Rumstuckle.
Really simply laid out but surprisingly good and comprehensive introduction. You can go from absolute novice to performing LBRP with a guide to further study