stop-motion

Does anyone here know anything about making stop-motion movies? Me and a friend are in the middle of one right now, we just finished constructing an incredibly large castle out of lego, as you will probably guess, it is a lego stop motion. I have a camera (a digital but am having trouble deciding how to film it, its between using the photo to tape mode or recording in really short bursts. If anyone knows anything about this, could you please help me?

Thank you