Michael Alexander is a Microsoft MVP and author of several books on advanced business analysis. He shares his wisdom from more than fifteen years consulting and developing reporting solutions for a variety of industries as the principle contributor at DataPigTechnologies.com, where he offers free video tutorials with the Microsoft Excel and Access communities. Dick Kusleika is a twelve-time Microsoft Excel MVP and principle contributor at the Daily Dose of Excel blog. John Walkenbach, principal of J-Walk and Associates, Inc., is a leading authority on spreadsheet software and creator of the award-winning Power Utility Pak. He has written more than 50 books including all previous editions of the Excel Bible.