Greetings from Pittsburgh!
I just refilled my Parker 45 this afternoon, and flushed out one of my Vectors. Ironically, that 45 came from a small antiques mall in Waski the Squirrel's old stomping grounds of Coudersport, a couple of summers ago (wasn't even sure what it was until I posted photos on here -- I only knew it was a Parker, and that it was the only pen in the box that looked somewhat decent). It was my first gold nibbed pen, a juicy medium, and I think my first semi-vintage pen.
My general advice is to spend some time looking at the new content -- that will give you a variety of topics in manageable chunks, until you figure out what you're interested in, and check out the Index thread in the Ink Review Forum.
This forum is full of friendly folks who will happily point you at their favorite pens, inks, and paper, and also walk you through simple repairs (or point you at their favorite experts and nibmeisters). Of course we are all also complete enablers, who will happily separate you from your cash (there's even a Classifieds forum, although I haven't taken advantage of it myself...).
Ruth Morrisson aka inkstainedruth
"It's very nice, but frankly, when I signed that list for a P-51, what I had in mind was a fountain pen."