Goetic divination has had a bad press from the urban literati of the Classical world up to the present day. In Goetic Divination, Jake Stratton-Kent provides an overview of the history of divination, as well as practical instruction on divinatory methods, including the use of astragals, pendulums and hydromancy. The pamphlet also includes an easily removable pendulum board.
Jake Stratton-Kent has been a goetic magician since 1972, making more than forty years of continuous goetic practice. His practical work integrates the magical papyri, italo-french grimoires in particular the Grimorium Verum and African traditional religions with a focus on Quimbanda and magia negra. His interest in magic spans the ancient, medieval, renaissance, and modern as well as stretching from the West to the Middle East and crucially, the New World. His scholarly approach is backed with a personal relationship with the spirits.
A fairly short but concise look at divinatory methods within a Goetic framework. I'd recommend this short work if you are familiar with Goetic literature and/or have a few demons under your belt.