Shift Keys
Shift + F1 What's This?
Shift + F2 Insert Comment
Shift + F3 Insert Function dialog box
Shift + F4 Find Again
Shift + F5 Find dialog box
Shift + F6 Previous Pane
Shift + F8 Add to Selection
Shift + F9 Calculate Worksheet
Shift + F10 Right Click Menu
Shift + F11 New Worksheet
Shift + F12 Save
Shift + Spacebar Select Row
Shift held down while in Copy mode will enable you to select Paste Picture and Paste Picture Link from the Edit menu.
Keep the Shift key pushed down while expanding (contracting) Autoshapes to keep the same height:width ratio.