What to do to it... Maintain it well, change your fluids, and keep everything well running. Take it on the trail, and have fun! Wheel it to the max, and if you see an obstacle, give it hell and let the trail know that you are the boss... Respecting, of course, the integrity of the environment...
As for mods and such, can't help ya there... Well, except for this. If you are to be wheeling it, front and rear tow-points... Front can be a grille guard, or just hooks, rear can be a rear reciever, or just hooks... Whatever the case, these are pretty important to have so if/when you get stuck, you can be recovered with ease to do it all over again. They may not be the fanciest mods, but they're really quite handy...
Welcome to Jeepz, hope you stay with us, and post often.