From How to Shoot Video that Doesn’t Suck, Page 111:
You gotta walk before you run, and in video, you gotta learn how to compose a shot before you start waving the camera around.
Film is motion, but motion doesn’t always mean a moving camera. Moving objects in the frame, a static camera and film cuts convey enough motion and emotion to be authoritatively exciting in ways that a vaguely meandering camera won’t.
Until you’re a pro, you’ll shoot better video if you don’t move the camera. But don’t worry—a static camera doesn’t mean a boring video.