Get the Zelos kit, get a few juices (again, i'd suggest at least one RY4 variant, ex smokers more often than not enjoy it, including me), have a toot - if you indeed enjoy it and think you can stop through vaping, you'll advance to, well, more advanced ("proper") stuff pretty quickly.
Things to note in regards to pre coiled (so called Subohm Tanks, even though in the case of the Nautilus it's not sub ohm), once you get it, you need to "prime" it to prevent what happened to me. Once you have the nautilus, and are ready to vape - before you vape for the first time on a fresh coil, drip one or two drops of juice down the center of the coil, then refill the tank, then let it sit for 5 minutes to make sure the cotton is saturated.
Because if it isn't, and that's the mistake i made, it's basically a so called "dry hit". Or, as i like to call it, "smoking a t-shirt" (cotton). Can be pretty disgusting.