To apply data validation rules to a selected cell or range, head to the "Data" tab on the ribbon, and click the top half of the "Data Validation" icon if you're using a wide screen, or the left half ...

You can delete a pivot table in Excel with a few clicks on a Mac or Windows PC. Here are two ways to do it.

You can easily create a drop-down list in Excel to limit the values that can be entered in a column. Here's how to set one up ...