Save your work whenever you do something you'd hate to have to do again.
Assigning values to a workbook's properties makes it easier to find your workbook using the Windows search facility.
Be sure to give your worksheets descriptive names.
If you want to use a worksheet's data in another workbook, you can send a copy of the worksheet to that other workbook without deleting the original worksheet.
You can delete a worksheet you no longer need, but you can also hide a worksheet in the workbook. When you need the data on the worksheet, you can unhide it.
You can save yourself a lot of bothersome cutting and pasting by inserting and deleting worksheet cells, columns, and rows.
Customize your Excel 2007 program window by changing how it displays your workbooks, zooming in on data, and adding frequently used buttons to the Quick Access Toolbar.