Excel includes a variety of built-in formats that cover general, numeric, currency, percentage, exponential, date, time, and custom numeric formats. You can also design your own custom formats based on one of the built-in formats.
On printing worksheet you might not be satisfied with the current pagination, so you might need to insert or remove manual page break.
Using the Hide command you can hide the data and formulas from "inquisitive minds". But some of them still can use Unhide command. Nevertheless you can completely hide Excel spreadsheet so that it will be needed some VBA programming to unhide it.
Excel offers you an ability to assign user-level permissions to different areas on a protected spreadsheet. You can specify which users can edit a particular range while the spreadsheet is protected. As an option, you can require a password to make changes.
With Excel built-in tools you can easily work together on workbooks and monitor who, when and what changes made. E.g., track project status and tasks.
Sometimes it is necessary to compare two Excel worksheets. E.g., compare balance sheets for different periods of time. You can do it by comparing worksheets side by side in two automatically linked windows.
Sometimes you might want to lock cells in your Excel spreadsheet that contain formulas and functions or data. Thus, the person doing the data entry will not accidentally overwrite or delete the spreadsheet formulas and functions or your data.
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.
This tip describes how to place into one cell both column and row header known as elbow.