Press F10, and small letters appear over each ribbon tab and quick access toolbar item. Alt+H takes you to the Home tab, Alt+N to Insert, and so on. Once in a tab, additional letters appear for ...

In Excel, the formula bar is the toolbar at the top of the spreadsheet that lets you enter or view the information in a cell.

If Excel is not highlighting cells in the formula, enable 'Allow editing directly in cells' and 'Enable fill handle and cell drag-and-drop' in Excel options.