Congrats on the new Lang, and it won't take long for you to figure things out! A couple of things to do with your new smoker:
1. Take a wrench and make sure all the bolts are tight, including lug nuts, suspension brackets, etc. I never had any issues, but after such a long trip it pays to make sure nothing shook loose during transit.
2. Keep your fire box coated in grease, as this seasoning will keep it from rusting, and mine is rust free for almost two years. Also, don't forget to season the innards!
3. As for smoke, I usually burn hickory and pecan for flavor, and white oak for heat. You can add some fruit wood to also flavor, and I sometimes use a little green apple to enhance flavor. The Lang is pretty efficient, so you are getting much less acrid smoke, so experiment with different things to get the taste you like. If you want a little stronger flavor try some red oak, as I use this when smoking brisket.
Anyway, keep us posted on how things go, and you are going to love that smoker!