Throw a couple pieces of wood in the box, turn the thermostat to 225 degrees and let it run for four hours or so.
The first thing you should smoke is Pork Butt. No doubt. Pork Butt. You won't screw it up. It will taste good. After the Pork Butt, you'll attempt to smoke anything that is edible, just because.
My experience.
http://www.lamaine.com/bbq/porkbutt.html Good luck! Enjoy the Smokette! I have.