A few basics options and ideas. The best option is if you live in a major city and can go to a nice pen store (I can give you recs for NYC if you live here or nearby) and, in audio parlance, demo a lot of pens. This is the best way to get a sense of what you like and works best with your needs, writing style, aesthetic, etc. Btw, pen people have a lot of the same break-in/burn in issues -- nibs get "accustomed" to your hand over time, etc.
If that is not a chance, you can answer some of the questions below and I can point you to some good web sites and a few personal recs (although be forewarned -- pen taste tends to be highly personal and somewhat ideosyncratic).
Regardless of your proximity to a pen store, other things to think are what you want out of it. Do you want a nice, very classy signature pen for more formal occasions? Do you want to try out a good workable (but not necessarily expensive) fountain pen to see if you want to make the transition to fountain pens for your everyday life? Do you want to try seeing what it is like to use a very nice fountain pen as your regular pen? Do you want to collect them? How much do you want to spend to dip your toe in the water? What do you like aesthetically?
This is not get to get into the whole series of writing questions that drive pen, nib and ink selection (although infinitely cheaper, ink selection is the interconnect/cable selection of the pen world). But that is for another day....
