Whether you are a beginning photographer or a working pro, you will benefit from this solid instructional guide. It begins with in-camera flash basics, then moves to intermediate topics such as automatic and manual exposure flash readings, detachable units, flash guide numbers, bounce flash and fill flash. It then covers advanced methods for using off-camera flash, flash brackets, power packs, remote triggering and many other valuable techniques.
Its not a bad intro text to flash photography. It's main difficulty is that it was published nearly 20 years ago, so many parts are just not relevant to the vast majority of today's learning photographers.