There are numerous trails. Most start outside of town either to the south or north on highway 191. A few start east or west at the edge of town. For a good idea of a lot of the more popular trails take a look at the red rock 4 wheelers club web site. They have trail difficulty ratings (will help you determine what trails you are capable of) and descriptions. You will find photos there as well!
Hope this helps. You definately should come...you won't regret it. Just ask anyone who was a first timer last year.