Below are a few examples of shots that will help you capture great looking footage.
Close up pushes the zooms in as close as possible to the subject. The close up is a tight frame around the subject.
The medium shot fits the subject in any frame between the close up and the long shot.
The long shot is a loose frame on the subject. It is sometimes used as an establishing shot; followed by a medium shot or close up.
The space left in front of the subject, inside the frame. Leadroom is especially important for capturing video of moving subjects.