As someone who is fairly new myself, I would recommend starting with a basic but decent system, something that's really user-friendly and not too complex while you start getting to know how vaping works and getting to know the vaping world. For me, a starter Evod kit did the trick, or pairing something like an Ego Spinner with Evods or other basic clearomizers is also a very easy way to get into vaping.
I've already started moving to upgrading, and ordered my first advanced personal vaporizer this week, but there's no way I could have done that to start -- vaping can get really techy, which is half the fun for a lot of people but can be confusing and sort of dismaying if you don't fall into that category.
My trajectory so far was that I basically spent the first month researching constantly here on ECF and watching a lot of YouTube videos, as well as researching juice vendors and trying a LOT of different juices (with more on the way). Now that I've got a good stash of high-quality e-juice, that's when I started to feel like I could be getting more from the experience by upgrading my hardware.
Basically, I'd say don't stress yourself out too much to start. Invest in a decent, user-friendly set-up, like an Evod or Ego starter kit, then order some great juices to try while you hang out at ECF and get to learn more about vaping.
By the way -- my starter Evod kit came on Saturday, July 6. I had three smokes left, and was a 30-cigarette-a-day smoker for 15 years. I chainsmoked my last three, started vaping, and haven't bought cigarettes since. Bummed a few here and there, but in the last couple of weeks I haven't even wanted a cigarette. Some people get off analogs at a different pace, but definitely vaping can change your life. Good luck!