Hate to say it, but reading through the posts would help you decide much better than a couple of responses here. I read in every second of my spare time for the better part of a week before pulling the trigger and buying something. In the meantime, I smoked normally and vaped on the convenience-store e-cig I bought. I knew from reading here that I could do better, but I wanted to make sure I didn't screw up before I spent the money.
I ended up buying an Echo with 1300mah batteries (these particular batteries last about 13 hours). I'm away from home 12 hours a day and this was essential for me. The Echo is NOT a top seller around here so my suggestion is likely not going to be, er, echoed by many people. There's nothing wrong with it, but folks will likely steer you toward the Ego line, which as I understand it, is similar but a bigger seller with more supplier options.
You need to decide what you need and what you like and what you're willing to do. If you are by nature a tinkerer, you might go all out and get tanks and mods and all kinds of other stuff (and you might end up there a few months from now anyway). You might want only something that looks like a cigarette and prefilled cartomizers so you don't have to mess with e-liquid, but everyone here will tell you that the more it looks like a cigarette, the shorter the battery life and the less you're likely to be satisfied, and that prefilled cartos generally suck (stale liquid, little selection, higher cost).
Try checking out the threads on these brands and see if any of them are calling to you: Echo, Ego, Kgo, Riva.
As for e-liquds, there are a couple of "favorite juice" threads in the new members forum that will give you ideas. Remember that if you smoke a pack a day or more, you will likely need 24 mg of nicotine just to ensure you aren't going through withdrawal. Remember also that your taste buds will be all wacky at first, and your tastes will change, so don't buy huge vats of something ... buy a lot of sample packs and vape vape vape.
Buy at least two batteries so you can be charging one while using the other. Buy lots of empty cartos to test liquids. Most starter kits will set you up nicely, but I would definitely order more cartos than you think you'll need.
The learning curve here is steep, but it's worth it to get it right the first time .... do NOT go back to the mall kiosk; you'll waste a ton of money and be discouraged pretty quickly, as I think you're already seeing...
People here are very willing to help, but you are not gonna read one post and know that that is the way to go. You'll get a dozen suggestions on this thread and every one of them will be different. It's up to you to narrow it down to the one you will go with.
Hope this helps! Welcome!!!