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 577th installment in their series of digital spreadsheet magic tricks, you'll learn how to use SUMPRODUCT and the join symbol (&/ampersand) to group duplicates and then see how to use advanced filtering to extract a list of unique records.