I am making an effort to read more books about horsemanship on the advice of my trainer. While I originally thought that it is hard to learn from a book, and learning by feel is better, there was a lot of useful information in here that did help me come more attuned to my horses reaction to my aids, and helped me understand what I was trying to achieve with my aids.
I really enjoyed the photos, and that while the rider is an accomplished teacher and competitor, she still took the time to point out things that she was doing wrong in photos, proving that no rider is perfect which is why we all strive to keep learning.
Some of it I didn't find that helpful especially the chapter on "The Higher Airs", which is beyond my skill level and probably will not be attempting in my lifetime. That being said it did a great job in describing the roles of each of the aids individually before moving into very technical moves such as the higher airs, piaffe, passage, etc. She also went into detail on how each of the aids would differ on an experienced horse versus a young or unschooled horse, which I found fascinating given that I currently have a very schooled horse, but in the future am interested in training a young horse.
Highly recommended for readers who are looking to understand more, or want to discover new exercises they can try at home with their horse.