Sit at home in a dark room with your camera on a tripod. In full manual mode set your exposure time (shutter speed) to 10 seconds, your F number (aperture) to 2.8, and your ISO to 200. Wave a torch around and see the results.
This should give you a good basis to go off, and will also start you off on a learning process of using your camera effectively.
Without moving your camera you can then go onto taking the same photo with a different lens.
Scarecrow of the Sydney branch of the Cave Clan.