You'll Need to Learn the One-Finger Wave
If you're moving from another neighboring Midwest state, you may already know how this works, but if you're moving from either coast or from the south, you should probably learn this:
What is it?
When you're driving down a two-lane highway, more often than not, the driver - especially if it's a male driver - of the oncoming vehicle will wave at you, even if you don't know him. But the wave is not with his whole hand; the wave will be with his index finger; hence the name, "the one-finger wave." This wave may or may not also include a slight nod of the head.
How do I do it?
As the driver, place one hand on your steering wheel at the 12 o'clock position, and simply raise up your index finger (pointing upward) in a laid back sort of way. When you're comfortable with that part, feel free to add the slight head nod at the same time. Be patient with yourself; this may take time, but nothing more clearly defines the friendly, easy-going attitude of Nebraskans.
Nebraska: It's the Good Life