This book is the result of the collective effort of many people. We’d like to start with thanking Kenyon Brown, our acquisitions and developmental editor, who initially approached us about updating and extending the previous version of the book and provided invaluable assistance in getting this project off the ground, overseeing it with patience, and providing thoughtful support at the key points in the project that helped us to make this book a reality.

Second, we would like to thank our technical editor, Chris Casingena, for his professionalism, dedication, and a positive attitude to resolving every challenge that this project might have presented to him, especially for doing a technical review of the last chapter of this book on his birthday.

Next, we would like to thank Kristen Borg, our production editor, and Kim Burton-Weisman, our copy editor, whose precision in orchestrating the production schedule, meticulous approach to details, patience, flexibility, and good humor ensured that the book was published on time.

Last, but by no means least, we would like to thank our respective husbands, Gregory and Peter, for bearing with our work on this book in the evenings and over the weekends, and more than anything for their boundless support for this project.