Hello and welcome!! I am relatively new as well. I started out with a V2 with the prefilled cartomizers just to give it a shot. I wasn't a heavy smoker but I LOVED to smoke. I have loved it off and on for a very long time. Today is 3 weeks since my last cigarette. It's hard for me to believe that I honestly have no desire for a cigarette now that I vape. It took me a little while to figure it out. I am sure I don't have it all figured out. And, what I am doing seems to be working.
I quickly moved from the V2 to a Joyetech eRoll. It's a sweet little device and I was able to put my own juice in the cartridge. I still use it when I am in the car or out in public because it's small and discreet.
I also use an eGo-C when I'm home. I bought a twist when it was on sale on Cyber Monday and some mini Vivi Nova's to try but haven't yet.
One thing I learned that seems invaluable to me is to let your juice steep. I bought some juice that I really didn't like when I first tried it. Now, after letting it sit for a week it's amazing!!
Of course, with everything, YMMV. Good luck!!!