For those who are new to Giles' previous works, I will immediately suggest to dive into one of his other Black Dragon and Codex books first. However, for those who already have dived into the Black Dragon praxis and are deep in, you have a book that connects a lot of the dots. This book is definitely well written and a bit more clear than the previous four entries, but it also does require diving into those other volumes to fully grasp. It's tough to praise on its own, but as an addition to a practice, it's great like Peter's other works.