Instructions
Grab the cello bow with the right hand, with the stick pointing to the left as you sit.
Place the thumb between the stick and the "frog" or rubber component attached to the stick.
Rest the index, middle and ring fingers on top of the stick, opposed to the thumb. The middle finger should sit more or less directly above the thumb.
Set the first joint of the first (index) finger near the front of the metal pad of the main stick.
Angle the fingers so the tips are pointing slightly to the right of your lap. This allows freer movement of the bow while playing.
Rest the thumb between the frog and the leather pad, but allow the pinkie finger hover over the stick rather than rest on it.