Derrick,,,don't trust anyone! Forget reputations,,,you can get a bad piece from anyone.. [Wasn't he endorsing the nazi toilet paper at the SOS? It's been proven they BS.] Sure it probably helps to buy from those with good reps,,,but only because they offer a return policy!!

Try to specialize in one thing,,or a couple if you must.. Then learn all you can about it. Books, books books,,,the forums too.. Study authentic pieces not the fakes. Seek and handle as much as you can.. ...
Have you gone to a SOS or MAX yet? If not go. Even if your broke when you get there, go!.. Look at the authentic stuff. Study it right there! There are also many who'd love to talk to you about the pieces your interested in. You can learn a lot at the big shows just by keeping your eyes and ears open. "May I have a look at that in hand sir?" Many if not all will let you handle something or use your loop to have a look. IF your asking to inspect Hitlers visor cap,,,forget it!

Your horn,,chalk that up towards your tuition.. Look what you've learnt so far! Just not something to make a habit of though..

My best advice,,,Specialize,,,and reference material,,and patience...Happy Hunting buddy...,G.