You can use Excel, Microsoft's spreadsheet program, to store, organize, and analyze data in a number of ways.

To add a formula in Google Sheets, click the cell where you want the answer, then choose one of the hundreds of functions.

The GIST method is an aptly-named system for condensing your notes (or anything you’ve read, like a chapter in a book) so everything is as simple as possible to read through and review. The point is ...