Bill Jelen is the host of MrExcel.com and the author of 42 books about Microsoft Excel including Pivot Table Data Crunching, Excel Gurus Gone Wild, and Guerilla Data Analysis Using Microsoft Excel. He writes monthly Excel columns for Strategic Finance magazine and is a a contributing editor to CFO Magazine.He has been awarded the MVP in Excel for 8 years by Microsoft. He has made over 60 guest appearances on TV’s Call for Help with Leo Laporte and was voted guest of the year on the Computer America radio show.His has produced over 1700 episodes of his daily video podcast Learn Excel from MrExcel. Before founding MrExcel.com in 1998, Jelen spent twelve years “in the trenches”, as a financialanalyst for the accounting, finance, marketing, and operations departments of a publicly held company. Since then, his company automates Excel reports for hundreds of clients around the world. The website answers over 30,000 questions a year – for free – forreaders all over the world.