This book is my go-to recommendation for those who want to create a foundation to build upon when it comes to working with spirits. The author touches upon concepts that may be overthought and overlooked by the novice while making sure to emphasize the importance of not crossing cultural lines when one shouldn't. It provides a good framework for invocations, evocations, forming spirit pacts, offerings, and the list goes on and on. There was one issue I had with the book. The issue in question is when the author wrote about different ways to banish and protect the practitioner from spirits. One of those banishings was the LBRP (Lesser Banishing Ritual of The Pentagram), a ritual from the Hermetic Order of The Golden Dawn. The problem here is that the author only gave it to the reader as a method of banishing spirits. Those who follow the Golden Dawn tradition or any path similar, know that rituals like the LBRP are not only for banishing spirits and it's not its main purpose. The author doesn't give many nuances to the banishing ritual, but besides that, the rest of the book is still great.