To help you with this, we've created a cheat sheet of some of the most useful Microsoft Excel power user keyboard shortcuts for those using the program on a Windows computer.

Bonus tip: With basic formulas, the AutoSum button is the top choice. It’s faster to click AutoSum>SUM (notice that Excel highlights the range for you) and press Enter.

The new user interface in the latest version of Microsoft Excel changes all the rules. Here's how to find your way around and get the most out of Excel 2007.