Getting car insurance in NJ is about the same as it is in any other state. There are rules you have to abide by and there are certain types of coverage that you are required to carry. Insurance companies will check your credit, your driving record and your age so they will know how much insurace will cost for you.
Call around and see who offers the best rates for your needs and see who will give you discounts for your good driving record, or good grades or because of your age. See if putting more than one car (mulit-car discount) and your home on one policy will save you more money in the long run. Do some checking and ask your friends about their insurance. Make an educated decision when buying car insurance in NJ.