Amen to all of what Jupiterhill says. I'm here because of the community (unlike say Blowout or Beckett, both of which have mostly good people but the bickering, name calling, bullying, and moaning is why I don't participate there anymore) which just loves cards. Not value, not "How can I get the best value out of my collection" thoughts, but for the love of the hobby. Don't screw with people, don't attack, don't do things you haven't learned yet, just enjoy and participate to your ability.
Over the last few months I've really taken an interest in the inaccuracies reports. If I am not confident in my abilities then I don't address the report. Obviously you are not confident in your abiities with images, so don't participate in that regard until you are.
Trading wise, I have nothing to contribute to this conversation. We have never dealt, and I will leave it at that.