We are new too, haven't camped in it yet. Lots of great advice here about the technical parts, here's some other stuff.
We bought 6 safety cones, and went to an empty parking lot. Lined up the cones, and then practiced. Here's what we've learned:
As important as backing in, is getting directions straight!
Make sure you and your spotter are speaking the same language, and be specific! ;) "No, the OTHER way" doesn't really help.
We have also figured out that we will be using 2-way radios, because with the 40' FW, and the Diesel Dually Long-Box - whoever is in the truck can't hear the spotter. I don't want our first introduction to a campground to be :M @$%@#%@#$% :M LOL