I bought this book a few months back and it's a very easy read.
It has all the information you need to get started with impromptu hypnosis, backed up with detailed photos, funny stories and ideas, so with a bit of reading, a bit of practice and a lot of confidence you can follow Anthony's instructions and hypnotise friends, family, bar staff or those anoying market researchers that pester you on a Saturday afternoon in town.
As I said, the book is very simple, it covers a lot of key areas for safety, for yourself and your subject (or victim, if your thinking of getting them to moo like a cow).
I actually trained with Anthony Jacquin after buying his book, and I got to practice a lot of the methods described in this book.
This book will teach you the basics (very well) but I would recommend training with a professional before attempting.