Press F10, and small letters appear over each ribbon tab and quick access toolbar item. Alt+H takes you to the Home tab, ...

Defining Custom Key Combinations: When assigning shortcuts using VBA, it’s important to create unique combinations that don’t conflict with existing shortcuts in Excel.

If the F4 key’s repeat function isn’t working in Excel, the function keys on your keyboard could be locked by the F Lock key. Look for an Fn, F Lock, or F Mode key on your keyboard.