Tool Menu
Using Auto correct command.
Click on Tools menu.
Click on Auto correct command.
Then a dialog box will appear.
Click the required options.
Type the common mistakes in Replace box.
Click on Add button.
Click on Ok.
To protect worksheet.
Click the worksheet name which you want to protect.
Click on tools menu.
Click on protection Command.
Click on Protect sheet.
Then a dialog box will appear.
Choose the required options, (Contents, Objects etc)
Type a password.
Click on Ok.
Again type the same password.
Click on Ok.
To protect workbook.
Click on Tools menu.
Click on Protection command.
Click on Protect workbook.
Then a dialog box will appear.
Choose the required options(Structure, Window)
Type a password.
Click n Ok.
Again type the same password.
Click on Ok.
Using Goal Seek command.
On the Tools menu, click Goal seek.
In the Set cell box, enter the reference for the cell that contains. The formula you want to resolve.
In the To value box, type the result you want.
In the By changing cell box, enter the reference for the cell that contains the value you want to adjust. This cell must be referenced by the formula in the cell you specified in the Set Cell box.
Click on Ok button.
Using Auditing command.
Click on Tools menu.
Click on Auditing command.
Then click on the required options. (Trace precedents, trace dependents, trace errors)
To remove trace arrows
Click on Tools menu.
Click on Auditing command.
Click on Remove all arrows.
To Show/Hide gridlines, row & columns header, scrollbar, sheet tabs etc.
Click on tools menu.
Click on Options command.
Then a dialog box will appear.
Click on View tab.
Choose the required options to from windows options.
[Gridlines, row & column headers, Horizontal scrollbar, sheet tabs et c.]