CTRL + *: Highlight All Your Data If you want to highlight all your data quickly, you need to press the Excel asterisk shortcut: CTRL + *
This will highlight all your data (regardless if you have blank cells) including column names, saving you lots of precious time.
F4: Repeat Last Action If you want to repeat a previous action, like inserting a column/row, formatting cells, copy & pasting etc, then you can use the F4 keyboard shortcut which will repeat your last action (in most cases).
CTRL + BACKSPACE: Go Back to the Active Cell Say that you click in cell A4 within your Excel worksheet and then you scroll all the way down to the bottom of the page to check on a number in row 20,187.
The quickest way to get back to your active cell in A4 is to press the CTRL + BACKSPACE on your keyboard!
CTRL + ENTER: Fill Down If you want to make a change to a cell and reflect that change to a selection of cells, then pressing CTRL + ENTER will fill down or copy your action to the selected cells.