Download and install or reinstall Office 2013
In Excel 2013, the new Flash Fill function automatically fills out a range of selected cells. Excel analyzes the entire table, detects relations between cells, and suggests a value or text. Excel also makes it easier to create pivot tables and graphics by generating suggestions in a similar fashion. The new Quick Analysis feature in Microsoft Office 2013 lets you preview certain formatting options in the spreadsheet itself.
PowerPoint 2013 splits the presenter mode into two different views for the audience and the presenter. Besides the presentation itself, you can also see a bullet list and more details on the presenter screen. On Tablets, you can switch between slides using finger gestures, paint with a stylus for a lecture on film, or use a virtual laser pointer.