Excel 2007 no longer has a menu (unless you call Home, Insert, Page Layout, etc., a menu), and you can't customize what's not there. Excel does still have context-sensitive right-click menus. However, unlike in previous versions of Excel, the user interface no longer provides a way to customize them.

If you prefer to avoid the empty workbook to be created when Excel starts up, you can do so by editing the command line that is used to start Excel.

Excel automatically creates three worksheets in each new workbook, but you can force it to create as many worksheets as you need.

When you need as much space as possible on screen to view a workbook, you can collapse (or minimize) the Ribbon to only its labels by double-clicking the label of the tab you're currently using.

Suppose you'd like to add a couple more commands to the Quick Access toolbar. Perhaps you miss the menu in earlier versions of Excel that let you quickly switch between open Excel windows. Also, say you're a big fan of AutoSum. You can add the AutoSum button to the Quick Access toolbar, so you can quickly create and use AutoSum entries.

Saving your document in the same location with the same name is easy.

If you're willing and able to edit the Registry on your computer, you can change Excel's number of Undo levels.

If you are working with huge workbooks that contain a very large number of formulas, functions, and data, you can turn off the automatic recalculation.