VLookUp is a formula that allows you to look up data in a range based on a specific lookup value. This is your secret weapon for surviving the Datapocalypse because it saves you time! If you have a file that has first name, last name, and student id and another file that only has student id you can use Vlookup to quickly add the first and last names to the file. This formula takes a little bit of time to figure out but once you do it unlocks a ton of options and can solve the issue with multiple spreadsheets with different information.