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 data.

How to search for terms or values in an Excel spreadsheet, and use Find and Replace

You can search in Excel with the Search Sheet bar, and use Find and Replace to swap out terms or values. Here's how to do it.