Pick up a Boston butt / pork shoulder (or 2) and do pulled pork. Mmmm.
Aluminum tray with water (do they come with that?).
If you are smoking, perhaps some hickory chips. Soak overnight before using. Do you have a local bbq / grill shop?
Remote (wired or wireless) meat thermometer. This is a must have I think.
Beginner's Grilling/BBQ book with recipes (I love this one
). It has excellent rubs and sauces, with a billion pictures. EVERY recipe has numerous pictures. You might find this book at Home Depot or local Weber dealer.