Top Ten New Features in Excel 2013
Apps for Office
The Apps for Office feature enables you to expand the power of Excel 2013 by installing all sorts of specialized little programs (sort of like add-ins) that are available from the Office Store right within the program.
To install and use an app, select Insert→ Apps for Office→See All on the Ribbon and then select the Featured Apps option in the Apps for Office dialog box. Free apps for Excel 2013 include the Bing Maps app to plot locations, the Merriam-Webster Dictionary app to look up words, and the Mini Calendar and Date Picker app to help you enter dates in your worksheet.