I will have to admit that I found driving a class A pretty daunting at first. But, we have had RV's of one sort or another for the past 29 years. My wife and I both routinely pull large loads on equipment trailers, or haul cattle. Our last two RV's were fifth wheelers. Both of my brothers hold CDL's and are long-haul truckers, and yet I still felt a little apprehensive about that first drive home. That apprehension is good - it will keep you focused until you build a driving routine. The funny part is, our class A is only a 30 footer! Fully loaded with toad it is far shorter and weighs less than our diesel pickup with a 30' dovetail and 20 rolls of hay. It didn't take long until I figured out the little nuances to driving a rig where the dimensions are "backwards" (tow vehicle longer than towed item). Just have someone mark the center of the front wheel (on our gasser it is at my knees) and then the center of the rear wheels. Once you have those two reference points the rest is simple geometry and visualization of the arc of the turn.
The only (obvious) tidbit I can add - don't drive past the capability of your brakes. Don't know that that is? Then try a controlled panic stop in a remote location with no traffic.
