These are applicable across all Office applications. To use the ribbon with the keyboard, just hit [Alt]. Office will show you shortcut keys for every tab, and every utility under those tabs. If you’re unwilling to remember more shortcuts, just this one feature is enough to accelerate your work in Office.
[Alt] or [F10]. Press either of these keys again to move back to the document and cancel the access keys.
Select the active tab of the Ribbon and activate the access keys
[F10] to select the active tab, and then [Left Arrow] or [Right Arrow]
Move to another tab of the Ribbon.
[Ctrl] + [F1]
Hide or show the Ribbon.
[Shift] + [F10]
Display the shortcut menu for the selected command.
Move the focus to select each of the following areas of the window:
Active tab of the Ribbon
Any open task panes
Toolbar at the bottom of the window
[Tab] or [Shift] + [Tab]
Move the focus to each command on the Ribbon, forward or backward, respectively.
Move down, up, left, or right, respectively, among the items on the Ribbon.
[Space] or [Enter]
Activate the selected command or control on the Ribbon.
Open the selected menu or gallery on the Ribbon.
Activate a command or control on the Ribbon so you can modify a value.
Finish modifying a value in a control on the Ribbon, and move focus back to the document.
Get help on the selected command or control on the Ribbon. (If no Help topic is associated with the selected command, a general Help topic about the program is shown instead.)