Mike Alexander is the funniest guy doing live Excel seminars. I appreciate him as a coauthor on all five editions of this book, which has earned the #1 spot on the Amazon Computer Book bestseller list (for 54 minutes one day in January). Rob Collie of PowerPivotPro.com keeps me up to speed on PowerPivot. At Microsoft, thanks to Aviv Ezrachi and Ben Rampson for always being willing to answer quick questions. At MrExcel.com, thanks to an entire community of people who are passionate about Excel. Finally, thanks to my wife, Mary Ellen, for her support during the writing process.
—Bill Jelen
Thanks to Bill Jelen for deciding to coauthor this book with me many editions ago. His knowledge of Excel still blows me away to this day. My deepest thanks to the professionals at Pearson Education for all the hours of work put into bringing this book to life. Thanks also to Bob Umlas, whose technical editing has helped us make numerous improvements to the examples and text in this book. Finally, a special thank you goes to the wife and kids for putting up with all the time I spent locked away on this project.
—Mike Alexander
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