Highly recommended- it has high-quality photographs and wiring diagrams, and good clear instructions. It does not dig very deeply into theory, but it does give some in context. I was able to complete a number of home projects that ordinarily I would have hired an electrician for. As getting an electrician to even return a phone call around here is nearly impossible, let alone show up, I needed a good reliable howto manual, and this is it.The Rex Cauldwell book is a good companion for this book, for readers who want the advanced course.