This is a great crash course on available lighting. Bill does not bore the reader with superfluous information but gives you very practical, up to date, information on how to maximize the use of ambient light. Lots of images and example that clarify application.
He is able to make complex concept into easily understood one. But most of all, he helps you understand lighting concepts in a way you can apply them right away.
I highly recommend it to any beginning photographer as well as a great quick reference for seasoned photographers.