Over the years, over the various editions of this book, many friends and colleagues have contributed enthusiasm, expertise, and even prose to this book’s editions. They include Zachary Brass, Dan Pourhadi, Rich Koster, J.D. Biersdorfer, Teresa Noelle Roberts, and Lesa Snider.

In addition to the dream team members identified above, I owe debts of thanks to O’Reilly’s Missing Manuals editor-in-chief, Brian Sawyer; Apple’s Monica Sarker for going beyond the call of duty to chase down tweaky tech answers; Kellee Katagi, my sharp-eyed proofreader; the NOVA crew, who gracefully accommodated my nutty book schedule during our shoots; and my spectacular screenshotter/index-marathoner, the lovely Emma Hollister.

I also wish I could send out an “I Made the Book Better!” T-shirt to every reader who ever took the time to write with corrections, suggestions, tips, and tricks. And thanks, as always, to David Rogelberg for believing in the idea.

Above all, this book owes its existence to the patience and affection of Kelly, Tia, and Jeffrey. They make these books—and everything else—possible.

—David Pogue