How to Create a list of items with a 2-array formula in Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 187th installment in their series of digital spreadsheet magic tricks, you'll learn two different array formula types for creating a unique list of items for a large list containing duplicates.