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 for Microsoft 365 automatically creates one worksheet in each new workbook, but you can force it to create as many spreadsheets as you need.
The Excel TEXT function enables you to specify numbers and date format.
Using the Hide command, you can hide the data and formulas from "inquisitive minds". But some of them still can use the Unhide command. Nevertheless, you can completely hide the Excel spreadsheet so that it will be needed some VBA programming to unhide it.
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 spreadsheets side by side in two automatically linked windows.
Color code is a perfect way to identify content and draw any attention to it. In Excel, you can easily change the colors of one or more spreadsheet tabs.
You can use Excel's AutoCorrect feature to create shortcuts for commonly used words or phrases.
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 automatic recalculation.
You may not always want to copy everything from the source cells to the destination cells. For example, you may want to copy only the current values of formulas rather than the formulas themselves.