Oz du Soleil is an Excel MVP who has been working with Excel since 2001. Oz has several Excel courses on the LinkedIn Learning platform. He's possibly best known for the dramatic and colorful Excel tutorials he posts on his YouTube channel Excel on Fire. Most recently, Oz has presented Excel topics and master classes at conferences in Amsterdam; Bulgaria; Brazil; Toronto; and cities around the United States. When Oz isn't elbows-deep in the guts of a spreadsheet, he does storytelling around Portland, Oregon. He has told stories onstage for Risk!, Pants on Fire, Seven Deadly Sins, Pickathon, The Moth, and other storytelling shows. Bill Jelen is the host of MrExcel.com and the author of 61 books about Microsoft Excel including Excel Gurus Gone Wild, Pivot Table Data Crunching, and Excel 2019 Inside Out. He has made over 80 guest appearances on TV's Call for Help with Leo Laporte and was voted guest of the year on the Computer America radio show. He writes the Excel column for Strategic Finance magazine. He has produced over 2200 episodes of his daily video podcast Learn Excel from MrExcel.