Here's my two cents, for some people starting on a "good" cig-a-like works good or an Ego with a 510 cartomizer. There's also adapters and small tanks that fit on the cig-alikes, Halo a vendor that has excellent kits and juices. I recommend either the G6 as I've had personal experience with it, and I've heard a lot of great reports about the e-Roll kits and I believe the price has recently dropped on those as well. Sometimes you can even catch a kit with lots of extras for cheap on the classifieds. I mention this about the cig-alikes and cartomizers is because for some people the "feel" and "realness" some of them give helps some people who are having a hard time to transition over more smoothly.
The disposables are a more expensive route, but they offer even more "realism". I was personally really impressed when I received the new Njoy disposable at a discounted price. It may help to "practice" with that kind before going up to an Ego/Evod or Spinner type battery.
I personally think having a good juice helps too. The way I do my draw is to either pull it into my mouth and then into my lungs, sometimes holding it there and then exhale out of both my nose and mouth, usually or directly into my lungs. At first I didn't want ANYTHING that didn't CLOSELY resemble a cigarette but as I started experimenting with the Evod style batteries and getting into all the mods one of my first purchases was a cheap Cool Fire 2 set from Innokin. It's styled after a WW2 grenade, somewhat heavy at first, and NOTHING like a cigarette LOL! I ditched the iclears got some Kanger Aerotanks that have airflow control and now I'm moving up to rebuildables!
I haven't had a smoke in something like 2 months! Don't give up. If you can afford to or get to a decent retail vape shop in your area see if you can experiment with a few different devices and juices. Like you said, don't over think things, I almost did that at first with vaping but for different reasons but I'm glad I forged forward! Just relax and make it fun, that's a big part of what "hooked" me. Maybe even look into WTA juices which are found to be calming to many, my self included! I hope you find out how to get your vape on and are able to give up those stinky smokes soon! Best of luck!
-Feignix