I found this author to be very specific re: the nodes and their stimulation of certain personality quirks/strengths. Speaking as a non-astrologer, I found the material to be well-written and informative. I plan to read as many books by this author as I can get my hands on, in order to more deeply understand myself and my chart.
I agree with a previous reviewer: this book, published in 1975, needs serious updating. While the information in it is not "bad" or inaccurate per se, it often seems based on unsubstantiated evidence, or worse, on outdated assumptions or information, and for anyone who has a serious interest into the "why" and "how" of astrology, and those who are relatively well read in psychology, astronomy, or any of the relevant other exoteric sciences, this book barely makes the cut.
This book is not a bad beginning, and reasonably good if you know how to extract the nuggets scattered throughout. Just don't get your expectations up too high!