Suggestions for mods

OP, you say that you are new to owning vehicles... maybe you drive the truck as it is for a while, see what it does well and what it's lacking, and then you will have a better idea how you want to modify it. Sure TW can provide ideas, but the V6 turbo swap, 8-foot snorkel and dually axle might not be your cup of tea.

 

Is that rig even 4x4?

A few things you can start with:
- Upgrade your headlight bulbs. Philips CrystalVision Ultra are pretty nice.
- Drop in a dry aFe air filter; do NOT install a CAI!
- Ditch the long antenna for a stubby.
- Tint those windows!
- Get a matching LED 3rd brake light.
- Upgrade the interior dome and map lights to LEDs.
- Upgrade the license plate lights to LEDs.
- Drop in a rubber bed mat.
- Drop in a cargo net.
- Install a hitch and trailer wiring.
- Install a bench seat organizer that hangs on the back if you haven't already done so.

That should keep you busy for a while and make your little rig more practical. Later, if you really want to do the off-road thing, you can look in to small lift kits and bigger wheel and tire packages. Good luck to you, dude!