It just came naturally to me. I mean it's obvious they need to see the sales person, and really you just turn it on and go. Wasn't a lot to learn but I did have the advantage of being a camera buff so knowing what is in the field of view of my cam comes naturally.
As for metro areas, some are better than others. Generally faster growing metros are better than slow growing. Lots of new home builders around? Probably a good area.
There are reasons that a body stays in motion
At the moment only demons come to mind