The documents that you will need vary depending on the insurance company to which you apply. Generally, insurance companies want you to submit proof of your identity, your driving record and information about the vehicle you would like to insure.
After you pass your ND Driving Exam, you will receive your license. If you are under 16, your license will be a restricted license, which will have certain limitations on it e.g. you will only be able to drive your parent or legal guardian's car.