Newbie/Virgins: an eGo Twist. A "kit" isn't a bad start. The Vision Version Two/Thor/CE4+ (iirc on the latter) draws harder, require eGo threads and work decent. A Vivi Nova "tank" is very nice. A mini Nova is nice (better than the VV2/Thor).
The Twist is Variable Voltage (vv) - there is a new version around similar to a twist which looks a bit more sturdy. I think the VV is a necessity when you plan to try several different clearo, tanks, etc - you can adapt to the devices and the juices.
I don't mess with carto, ymmv. Once you get set-up, keep your eyes open for something "better", since the eGo is not the end of the road. (I switched to boxmods, myself)