Ant, the Muir book is called "the idiot guide" because is a simple, basic, just the strictly necesary book. If you are confortable using more technical books like the Haynes and the Orange book, then stick to them. But if you need basic step by step procedures on how to do things if you don't know what a torque wrench is, then go the the Muir book. Anyways, it's not expensive, so, If I were you I would buy it just in case. It's a fun book to read, even though most of the things there you already know or you can find in the Haynes or the Orange book. Go to amazon and read the sample pages, the whole book is just like that.
Karls