Here is a list of all the helpful Microsoft Word/Excel shortcut that can help you save time here and there. I will continue to update this list as I think of shortcuts and formulas.
Ctrl+Alt+M = Add comment box
Ctrl+Shift + "+" = Insert row or column/ Shift cells left or right
Shift + F2 = Insert a comment in a cell
Alt + R + D = Deletes comment in a cell
Ctrl + 1 = Open up the 'Format Cells' box
Enter a date reference in cell A2
Enter =TEXT(WEEKDAY(A2), "ddd") into the cell in which you want the day to appear.