First welcome to the site, you are definitely at the right place if you want to modify your X !I guess you are looking for engine mods also? I assume its stock,I,d start with a good intake kit like a K&N FIPK or a KKM filter kit. upgrading your exhaust will help also,alot of people on this site are running Flowmaster mufflers,(which will be my next mod)depending on what size tires you want to run there are many suspension lifts available and body lifts ,a cheap and easy lift for you would be to install lift shackles and add a leaf for your rear axle and 2inch coil spacers up front,then you could easily fit 31's , you would be surprised at how much better your X would be offroad with those simple mods.Try the search feature for certain mods you are thinking of,you will find more than enough info.
good luck, Matt