These three courses will help you master Microsoft Excel for only $10

If there's only one office tool you should learn how to use, it's Microsoft Excel. You may have already been using it to some degree, or maybe you're just leaving it on your desktop to accumulate digital cobwebs. Either way, harnessing the full potential of the app is key to making your work life easier, and maybe even landing a heftier salary.

To a beginner, it can be intimidating to use the app. After all, once you open it, you're just presented with thousands of rows of cells. What would an Excel noob do with all those rows and columns of blank spaces?