Wow dude ... that'll be quite a bit of stuff. I'm a computer guy and I gotta say one of my favorite things about this is the "tech talk". Knowing that your CE2 clearomizers fit the eGo battery because they are 510 threaded but didn't fit my old 302 because that's a penstyle attachment.
Yeah, there is a bunch of jargon with this. All I can tell you is that you are in the right place. Basically tell people in here about what kind of smoker you are, brand, number of cigs per day stuff like that and maybe what other preferences you may have like "you want a small model that looks like a cigarette" or "you don't care about the size".
Stuff like that will lead people to recommend something that you may like. Also, if the first thing you buy doesn't work for you, come back here tell us what you didn't like and that will bring another flurry of suggestions to get you pointed in the right direction.
Good Luck!!