I think your trying to do to much all at once. I did the same thing when I got back into the hobby. I wanted to do PE parts, Bare metal foil, polished out paint, the whole 9 yards. But soon realized it was just to much all at once, so I backed up a bit and concentrated on the basics first. As my skills progressed I would try a new technique, and so on, until I could understand what works best for me. Anything you want to be good at takes time to master, be it Knitting, Photography, Stamp collecting, and the only way to become better is to learn by study and dedication to the task at hand.
As for the insults, you gotta take it with a grain of salt, alot of the guys here are trying to break into show biz as comedians, and Don Rickles they are not.
Sorry for your bad experance here.