Spin:

1.	Move your hand across the globe to "spin".
2.	Movements need to touch the globe.
3.	Slow movements will not register.

Zoom:

1.	Expand your hand slowly but steadily from a fist to fingers fully extended to zoom in.
2.	Contract your hand slowly but steadily with your fingers fully extended into a fist to zoom out.
3.	Quick expanding or contracting motions will not register so you can use them to continue zooming.

Sidenotes:

1.	If you expand or contract your hand while moving across the screen at the same time, spin will be favoured over zoom.
2.	Expanding and contracting motions within the globe will cause zooming given that there is insignificant movement across the globe.
3.	Requires practice.