I spent several years browsing, learning, contributing and meeting other truck camper owners at RV.Net forum in the truck camper section. You may have run across NATCOA (North American Truck Camper Owners Association) in your searches, and I would suggest avoiding it. I personally know the owner/creator of this website and although he has good intentions with the website, he is deceitful, and borderline insane in my opinion. He acts like he is the Truck Camper Messiah of the world in many ways. He has been banned from RV.net for his preaching of NATCOA, but keeps coming back with a different username.
Good luck on your travels.
Good luck on your travels.