Answer:
Zoom. Without a doubt, zooming is the most used (and therefore, most overused).
Pan. Panning is when you move your camera horizontally; either left to right or right to left, while its base is fixated on a certain point.
And tilt.
Answer:
Yes if you memorize by looking that way you can learn where each key is and when you do you will no longer need to look you will just know
Explanation: