A good part of this book deals with experiments that were conducted by old school of hypnosis. Remember Nancy School and Dr. Liebeault from your studies in history of hypnosis? Well, Ormond McGill has brought them back to life, so you'll get a little bit more insight in interesting experiments they used to do while hypnosis still used techniques of mesmerism. And I'm really glad for all the effort McGill invested in bringing back some valuable information that can enrich "modern" hypnotists - bringing life and energy to the world of hypnosis, because some intellectually oriented minds have completely dropped the energy out of equasion due to their own lack of understanding.
Now, awareness of using one's mind to work with energy is happily emerging in the west and one may even thank the proliferation of Eastern techniques and methods (from India and China - mainly in the area of healing - sure, you've heard of "chi kung"). In the west, these techings were mainly wrapped in mysteries reserved only for those who had inclination for esoteric studies and different occult practices.
There are two other books I recommend as a supplementary reading and workbooks together with this one - They are Ormond McGill's "Hypnotism and Mysticism in India" and Franz Bardon's "Initiation into Hermetics". They will help you to better develop the skills and use techniques from this book.
After describing different experiments performed a century or two ago (for that matter, you can find many other more modern books with numerous other mind-over-matter experiments), Ormond guides you through some practical techniques so that you can conduct your own experiments with these techniques.
The book is directed to those who have interest in using them in stage shows and from that perspective, stage mentalists who only learn how to use "tricks" to make the audience believe they can do something they are not doing, can benefit from learning how to be able to do genuine mentalism instead of faking in and using the art of deception. On this account there are some authors who are entirely focused on the area of deception and because that is all that they know and all that they are aware of, they live convinced that everything that comes even close to it must be some kind of deception. But where here is smoke, you can rest assured that there is fire, too. And even though they are ignorant of the fire and of the way how to produce real effects, it doesn't mean that the real thing cannot be done. In that respect, I do recommend this book to all those "stage mentalists" who have so far acquainted themselves only with techniques for producing different mind effects through trickery. They may surprise themselves with what they will be able to accomplish.
This book will also benefit a regular hypnotherapist who has no intention to get involved with any stage performance. They will learn how to add more power to their hypnotic techniques, by using the power of their minds, by working with the energy and direct thought transference, instead of just using words. They may also become aware of the fact that their own beliefs and expectations, even though unvoiced do affect the outcomes they get with their clients because there is always silent communication going on mental level and it goes beyond the subtle cues of body language (minimal cues, as they are called in NLP).
The book is called Mindreading, but the techniques covered are also used in what we call "remote hypnosis" or "remote influence". It doesn't matter whether the person is sitting next to you, or is in another room, or even in another country - when you work with mind and energy.
A distinction is made in the book between contact and non-contact mind-reading. Contact mind-reading was also used by Dr. Milton Erickson. Here practice with some essential NLP skills may be helpful as in order to be good with this, you'll have to be aware of the subtle (minimal cues) given off by another person. It is somewhat like a "lie detector", except that instead of a machine, you are using your own observational (calibration) skills to notice the subtle physiological differences in another person - in this case through touch.
Non-contact mind-reading involves clearing your mind and receiving mental impressions - something alike doing remote viewing, though there are remote viewing techniques that may go a little bit further than this.
For those interested in incorporating mindreading techniques from this book in their stage show, Ormond McGill provides several different routines to spice up the show.