my questions are:
-where can I find detailed instructions on how to mount a TV to metal studs in my walls? I just need as much detail as possible.
-should I just have a professional do this, & if so how will I know he is doing it the right way. I don't trust the "Geek Squad" etc.
It's not only he mounting, but running the wires in wall and power. No offense, but if you are asking these basic questions, hire a pro. Try www.cedia.net to find a qualified dealer. Also, do not be surprised when many of them are not in a rush to do this small job. Since they did not sell you the TV or mount, there is not much profit in the install. If you had posted your location, I may have been able to refer you to someone local had you posted your location, as I help run a website for custom integrators and know dealers all over the world.