This has become my primary reference for baking bread. I started with Reinhart's Bread Baker's Apprentice and a few months later purchased Hamelman's Bread. While BBA goes into a fairly lengthy narrative describing Reinhart's flavor building techniques, Hamelman's Bread goes into greater detail on the actual handling and shaping of the dough, as well as providing detailed information on additives, ingredient temperatures, and other practical details.
There is one caveat to my recommendation of this book: earlier versions of it were very poorly edited and in some of the recipes the ingredient amounts are badly off, especially for the home baker. Make sure you seek out the errata sheet for the book. With this in hand, Hamelman's Bread is a complete success. I haven't had any disappointing bakes using this book.