also... is there anything on this site that you would recommend getting?
Spend a little time exploring the deserts/mountains with your rig...nothing too crazy, green trails, forestry service roads. Pack a lunch, and just enjoy getting outside in your rig...a list of to-do's and to-want's will develop pretty quickly.
Do some research on recovery equipment, because the odds are, getting off road will eventually lead to getting stuck. A simple shovel and airing down can solve that first stuck...but then what to air back up with? Ah-ha...your first item on your to-want list is chosen for you...a reliable and portable battery connect-able air compressor. IME (in my experience) it kinda goes like that...as well as showing up for a meet n greet, or even better, getting some face time with others at an SCCX planned trail run.
Also, spend a little time here (and there, thenewx.org, IH8MUD.com, and other off road sites) and search folks Display/Build threads to see what tried and true items work on rigs like yours, or for trails you want to tackle.
Finally...don't expect everyone to instantly give up all the information on the how to/where to on how to mod up you Xterra...spend some time doing the research and reading to contribute relevant questions and answers to any forum is a recipe for success.
This shows other forum folks that you're not the average DIFM (do it for me) newbie who wants to post and run.
Good luck man...and feel free to PM any of the higher post count folks on this site with any questions you may have.