Here are more advanced keyboard maneuvers to help you keep your hand off the mouse. These shortcuts will make selecting the different edit modes and tools easier and faster.
Mac:
Shuffle mode F1, or Option+1
Slip mode F2, or Option+2
Spot mode F3, or Option+3
Grid mode F4, or Option+4
Zoomer tool F5, or Command+1
Trimmer tool F6, or Command+2
Selector tool F7, or Command+3
Grabber tool F8, or Command+4
Scrubber tool F9, or Command+5
Pencil tool F10, or Command+6
Smart Tool F6+F7, F7+F8, or Command+7
Windows:
Shuffle mode F1, or Alt+1
Slip mode F2, or Alt+2
Spot mode F3, or Alt+3
Grid mode F4, or Alt+4
Zoomer tool F5, or Alt+1
Trimmer tool F6, or Alt+2
Selector tool F7, or Alt+3
Grabber tool F8, or Alt+4
Scrubber tool F9, or Alt+5
Pencil tool F10, or Alt+6
Smart Tool F6+F7, F7+F8, or Alt+7