Just took the NJ test for the 1st time in October and passed. Seemed like just about everybody else there was there for their 2nd 3rd and 4th time trying to get through it. There was a lot of voltage drop, appliance (kitchen ranges), and service calculation questions on the NEC section so know your formulas.
The business law and fire/burgaler alarm sections were pretty easy, or at least I thought so.
My best advice is to know how to navigate your way through the books quickly and you will do alright.