As a Broker, whenever I can't answer a specific question, I always call the NH Real Estate Commission. They are busy, but as a state agency, (you are already paying them) and so they will call you back with an answer.
If it is a question of a NH law I agree the NH Real Estate commission web site is a great place to start http://www.nh.gov/nhrec/ or call them direct at 271-2701. If that doesnt help i would consult a Real Estate attorney.
Trying to understand or apply real estate law withou the proper formal educational and real life experience/background has its distinct disadvantages...be careful out there!