We're guessing that most of you out there are using Microsoft Excel. So here's a short video with our favourite ('Top 10') shortcut keys for Excel. You can even download the same spreadsheet that we used in the video and follow the instructions if you fancy trying a few out. Let us know what your favourites are! We purposely didn't include Ctrl Z (Undo!) as we're also guessing that this is one of the first shortcuts you learn.