Excel Shortcuts for Selection
Select the whole column Control + Space
Select the whole row Shift + Space
Select visible cells only Alt + ;
Select Entire Region Control + A
Select entire worksheet Ctrl + A +A
Select range from start cell to far left Shift + Home
Select all cells with comments Ctrl + Shift + O
Cancel selection Esc
Select cells in the direction of arrow Ctrl +Shift + Arrow
Select a continuous range of data Ctrl + *
Select blank cells F5 + ALT + S + K + ENTER
Selects all the way to a1 from cursor position Ctrl + Shift + Home