Congrats on the new ride. All of us will say the same thing. #1, -get the TwinAir or Unifilter foam air filter and oil. The stock paper filter is an engine killer as it strains-out the gravel but not much else. #2,- Check all the bolts, nuts and screws starting with the suspension bolts then components like diffs. Most all have loose a-arm bolts from the factory. Over torque by 5lbs. #3,- check that all the tie rod ends and ball joints have their cotter pins. Many leave the factory with some missing.
After that it's just maintenance. Change the oils at about 300 miles, then as outlined in the book unless you are using in extreme conditions.