Microsoft Excel

Auto sum, use Alt plus equals
Go to cell, use F5
to start a formula, use equals
Select the entire column, use control plus space bar
Select the entire row, use shift plus space bar
use standard window selecting keystrokes to select specific cells
move to edge of data regions, use control and arrow keys
Switch sheets, use control and page up or down
Move left or right one screen, use Alt plus Page down or up to move to the end of any row or column
use the end key then the arrow key in the desired direction
selecting text, use combinations of control and shift with arrows, home and end
Insert the date, use control plus semicolon
Insert the time, use Control plus shift plus semicolon