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 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 ...

You can filter data in Excel based on either certain parameters in columns or over the whole sheet, and you can later ...