Makes for a pleasant albeit bloated read. My impression is that most people would do well beginning with self-hypnosis and many would be fine sticking just to self-hypnosis. Temes' focus seems to be on wide coverage, i.e. showing all the things that hypnosis may help with.
Another book that gives wide coverage while sticking to self-hypnosis is Allman's and Lambrou's Self-Hypnosis: The Complete Manual for Health and Self-Change. But Allman and Lambrou seem to provide more substance.
I've enjoyed Leslie LeCron ("Self-Hypnosis: The Technique and its use in Daily Living" and "The Complete Guide to Hypnosis"). Self-talk, visualization, quiet sitting and common sense comprise a lot of self-hypnosis, so once you've realized that, your dependence on any hypnosis book will drop, but some writers do share useful techniques and focus. Hypnosis books tend to be inexpensive so you can try out a few to find the one(s) that connect best with you. For me, this book by Temes tends toward being too wide and not deep enough. Whereas I just have to pick up LeCron's "Self-Hypnosis" book and I. to my surprise, immediately involuntarily find myself breathing slower and deeper, as well as feeling calmer. But there's no magic, it's just that it's the book I got into self-hypnosis with and trust.
This book is superb for the average reader, because it tells so much about hypnosis. It does not seem to be intended to teach a lay person HOW to be a hypnotherapist, because for that one has to first be a qualified health professional, such as a psychologist or a physician. So, if one wants to learn a lot ABOUT hypnosis, read this book.