How to lock cells in Microsoft Excel, so you need a password to change or erase data

You can lock cells in Excel by heading into the program's "Protection" tab. There, you can set a password, and protect your ...
How-To Geek on MSN

Everything You Need to Know About Data Validation in Microsoft Excel

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 ...
How-To Geek on MSN

Editing a Formula in an Excel Dialog Box? Here's a Tip to Make Life Easier

By default, when you select a formula or source field in a dialog box, Enter mode is activated. You can see this in the ...