Welcome to the wunnerful world of Jeepin!
It might be a good thing to know where you're located
that would help in finding places to go.
One thing I would STRONGLY urge you to avoid is going alone and unprepared. It is SO easy to get in big trouble in a hurry when you're first learning.
Google your area or state for Jeep Clubs. It's a fantastic way to hook up with other like minded folks who can be a great resource for places to go and to have someone to ride with. They will also help you learn what to do, when to do it and with luck what not to do.
There is a lot to learn. What gear to take, learning recovery, how to prepare your rig for going off road, what to do on the trail and so on.
What kind of Jeep did you get?