Sometimes, you don’t know the problem you are having until you see the solution. Using spreadsheets fall into this category. There are things that you don’t know are possible with a spreadsheet, so you never ask or search for them. That’s where SheetHacks comes in. SheetHacks is a collection of over 500 cheat sheets for Microsoft Excel and Google Sheets on doing different tasks in the spreadsheets.
Whenever I have time, I’m going to randomly pick a cheat sheet in this list to learn something about using spreadsheets.