No worries, this race is fun. Last year we drove out from IN and had never seen sand on a dirt bike or had any navigation experience and still had a blast. I only made it 2 days before my bike gave up but myself and the guys that came with me driving the support truck still had a blast.
I had planned on using only gps to make it easy and just enjoy the race but somehow(stupid me) managed to fry my gps the night before the race. I navigated like others have mentioned by heading south, following people/dust trails, and duct taping road book pages to my tank. Not ideal but it worked until my bike quit.
My advice would be to come as well prepared as you can afford with a good attitude.
Oh and I'm selling a new patent pending roadbook holder. Only $19.95 a piece!