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.
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.
You can significantly reduce the number of errors in data entry in Excel by protecting changes of specific spreadsheets (worksheets) and cells.
Creation of a large number of visually consistent charts to represent different data is a time consuming and error prone task, unless you know how to copy formatting between charts.
Excel's ability to create automatic subtotals is a handy feature that can save you a great deal of time.
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.
The Excel TEXT function enables you to specify numbers and date format.
One of Excel's best-kept secrets is its ability to copy and paste pictures of cells. You can copy a cell or range and then paste a picture of the cell or range on any worksheet or chart.
To move around the worksheet with your keyboard, use the key combinations:
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.