Okay, first of all, most geometry books for high school and college cost around $150, weigh more than a brick, and are filled with so much fluff that its impossible for students to remember it all and any teacher to effectively cover every aspect of every chapter unless he/she goes through the book very fast which will leave the student behind.
This book on the other hand is basic and to the point. It cuts out all the unesseccary fluff and covers the basics for geometry in a fashion that will leave the reader comprehending everything. Its written to the point that anyone could grasp the fundamentals of geometry. One of the best things I like about this book is that each page is very open with a lot of white space and is not crammed with a bunch of visual garbage which makes it easier for the eyes to follow.
The examples are very clear and shows the reader step-by-step how to work through each problem so they will be prepared to take the quiz at the end of the each chapter.
As for my personal opinion, I highly recommend this book for people who need a quick and easy refresher in order to prepare themselves for the harder more in-depth geometry courses in college. It also serves great as a reference. This book will build the basic foundation of your geometry studies. Also, I think that this book, combined with the Practical Math, Algebra, and Trigonometry versions are the best 4 books you can buy to prepare yourself for the ASVAB test. The books are small, to the point, and are all you really need to know to succeed.