This is a book attempting to describe more advanced topics on magic for Witches whatever their tradition; although as a non-Wiccan Witch I felt what was discussed within the book was heavily bias towards Neo-Wicca somewhat. I got through this book relatively quickly, it's very easy to read and quite humourous at times. The contents lists the following chapters: 'The Science of Magic', 'Reality is an Illusion', 'The Veil Between the Worlds', 'Shamanism and Ecstatic Worship', 'Fae Blood, Fae Magic', 'When the Spirit Moves You', 'Trust Your Intuition' and 'Group Dynamics and Energy Flow'.
I found the first three chapters to be of the greatest interest, whilst the other techniques and topics discussed in the chapters after these were things I'd encountered before. For instance, in the 'Shamanism and Ecstatic Worship' chapter I find it hard to believe that the average Pagan is not aware of vision questing or the uses of a sweat lodge -- so too was the idea of trusting ones intuition and merging with a god as a way of 'channeling' esoteric knowledge during ritual. These hardly felt like advanced concepts to me. The first two chapters however, were excellent and sought to examine the nature of magic using science. I won't go into explaining it, but really, for those natural skeptics among us (including myself!) will find these two chapters to be invaluable for giving an excellent discussion of magic in a scientific context. Ms Polson does a phenomenonal job here and provides a great theory using up-to-date science that presents the reader with a convincing argument for magic's existence.
The chapter on Veil work was fascinating, but I felt it could have been far longer. The chapter on the Fae and the concept of 'Otherkin' (people who believe themselves to have once lived as Fae in the Otherworld in past lives) was interesting, and something I had come across before -- but I do have a hard time believing it so whilst I accept people may feel this way, I don't really think 'Otherkin' exist. Therefore that chapter was rendered moot for me.
One thing that annoyed me about the book was that it was dreadfully bias and highly advocative of group work; I had to roll my eyes when Polson claimed that a person should not astrally travel to the Otherworld alone, without anyone grounding them. Obviously this woman has never come across a real witch who was not a Wiccan in her life! Absolutely preposterous! Really, don't listen to most of her nonsense about group work which she expounds ad nauseum throughout the book (I found this to be very tiresome). Quite honestly, if you cannot even travel to the Otherworld without someone holding your hand then you have no business practicing Witchcraft -- indeed most witches/the Cunning Folk worked alone in the old days for fear of persecution of being caught working in groups, so covens are a relatively new form or working. Thus you really don't need other people to practice what's in this book as long as you have plenty of intelligence, experience, skepticism and common sense in abundance you'll be perfectly fine.
Overall, an interesting book. I do recommend it especially for the first three chapters alone; it also provides some great starting points for further research and practice. Enjoy!