This book is most definitely not "advanced". It combines the most simple elements of gone-west tantra with an extremely naive "understanding" of the Qabalah. All information relevant for practice could have been compressed to two or three pages. (It has, in other books.)
At least the "Tree of Ecstasy" could be of use for a well-protected introduction into the "infamous" topic of sexual magic.
Nowicki has done it again. This time taking on sex as an esoteric form. The book covers sexual excercies for working partners.