While the advice on the Ego as a starter WILL serve you well (I still have a few floating around as "just in case" PV's), my advice from my personal frustrations getting started vaping is go big or go home right off the rip. I don't mean drop $200 on a Provari for your first PV, but to try a middle range 18650 tube mod. Why 18650 you ask, because it will handle 3.7, 5, and 6 volt vaping all out of one device. Your trip to volcano let you know that you like it so there are a plethora of options you can try for under $100. My Maxi Roughstack V2 was $45, I just ordered a Silver Bullet today for $87 shipped, and Volcano's variable voltage Lavatube (which I'm seriously considering after the holidays) will be out in the next few days for $99.99 for the whole kit, mod, battery, charger, atty, case, and all. All in all, I think you would save money, and be happier quicker by going for the mod route right from the start.
Whatever you choose, good luck and enjoy it!