I think you did a good job overall. You have everything you need really. On your next order from canvape, i would recommend maybe a kanger battery, just for a back up. Maybe a extra charger too. You'll be in trouble if something goes wrong with one of the batts or the charger.
Dripping is something you do with the atomizers. Hopefully you got some drip tips, but you can use the ends of the kanger clearomizers in a pinch. Dripping is basically when you drop a few drops directly into your atomizer, vape it until its done, and drip some more. To start, i would blow them out into a napkin, they come primed with unflavored vg, so you'll want to try to get that out of them. Blow so the junk comes out of the battery end. After that, drip a few drops onto the mesh stuff inside of it, and vape away. You will notice the taste gets funky and you will get less vape, thats when you need to drip a few more drops. At first, you should take the atty off when dripping, at least till you get a hang of it. After dripping check to see if its leaking out, if you put too much in it will leak onto your battery. I think those batteries are manual, so they should be safe from getting juice into them, but i still think you should get used to it before dripping while they're connected, it can get messy. I find three drops to be good when dripping, i never overfill that way.
You can use the atomizers with cartridges, but honestly, im not really sure how that works.
The clearomizers and cartomizers are, for our purposes, the same basically. Cartomizer has filler material in them, you get this soaked with juice, and it wicks to a coil and you vape. The clearomizers are similiar, but they are a clear tank. With these you fill them up, and vape on them. I won't get into too much detail about them, i think if you look up a youtube video you'll be able to see better how to fill them than i could explain.
The converter you got will be pretty much useless for now. Different kinds of ecigs have different threads, so thats just a adapter so you can use 510 cartos/atomizers with a 808 battery, or vise versa.
Now that i think of it, maybe using the clearomizer tips might not be a good idea for dripping, the rubber seal might melt or something.. anyway, get some drip tips eventually.