Welcome Erica!! You'll probably find more help here than you know what to do with, which is better than just searching and searching online. I too want the cigarette experience at first, to replace the analogs. From what i've read and reserched, the Kr808d-1 or the 501 are the models that are the most favored by folks like us. The choices out there are mind boggling, and know what to get is really hard. I know, I too purchased a couple of kits from Lucky Slicks, which is similar to the White Dragon in that they really don't give you any information regarding batteries, cartomizers, cartridges or anything else that's available out there.
If you want to start with a model that allows you to use a cartridge or a cartomizer, has 3 different lengths and is compatible with a lot of different gear, you want the Kr808d-1. A lot of people try to persuade you to go to the Ego or Riva, because the batteries are so much longer lived than the 280 mAh battery that is the standard Kr808d-1, but they don't LOOK or feel like a cigarette. Looks more like a pipe for herbals, that I used to have long ago and far away. And that's just not what i'm into. I want something that looks and feels like an analog, so i can replace them. And hopefully wean myself off of them too. but I really enjoy vaping, just like I really enjoy smoking. And I plan to do just that as soon as i get my Kr808d-1 with cartomizers. I'm still using analogs but vaping too, since my Lucky Slicks have fairly small cartridges, and even though I drip a couple of drops of juice each time I vape, they just don't last long enough for me. The great thing about cartomizers is that they hold more juice, so you don't have to keep refilling them. You can have several different flavors of them, and when you want a different flavor you just pop a new cartomizer on. You can refill them a few times, so that saves money. And there are some good sites that offer fairly reasonable prices on cartomizers with pretty good juice in them. Or you can find your fav flavor out there and fill blank cartomizers. They come with little caps on each end, that are handy after you refill them or when you're cycling flavors to keep them fresh, and you can even use them to refill the carts. Or, if you want, you can get a DSE901 Atomizer and a drip tip and you can drip straight on the atomizer, which a lot of people prefer. You'd need a manual battery for that, so you don't kill your battery.
The best series of videos I saw were the ones that MistrissNomad did. She has a channel on youtube, and her series on the e-cigarette for broke people was ever so educational! Even if you're not broke, just the way she explained the different models, how to vape, how to drip, care and maintenance and how to make your own juice. It's the most comprehensive video series i've seen yet on the e-cigs, and i've seen a LOT in my quest lately. I would highly recommend starting there, and then making your own conclusions based on what all you learn. Then when you figure it out, come back here and you can get help finding the best websites with the most reliable products, that are tried and true by the awesome members of this forum.
I wish you good luck in your quest, and just know that most every one of us here has gone thru this, and we all feel your angst.