Yes.
Yes, the book "Aspects in Astrology" by Sue Tompkins is indeed a great book. It provides very deep understandings of how planets work together in pairs, something that is essential to know before you start applying aspects or other associations to define strength, rulerships, etc. Although I have other cook books that address all of the specific aspect combinations, I consider this book to be the best for any astrologer beyond the novice-level. Dave