If you're just sticking to the tank system, then pick up some spare tank atty's and blanks.
If you're dripping and other stuff, there are a lot of hardware to consider.
But, see if you are satisfied with the tank system first
.
There are no tank cartomizers, the tank system is in place of a cartomizer.
Yes, definitely stock up on some juice...the tank is a juice ......
Get sampler packs from different vendors and try them out...I, personally, don't love or hate Volcano's juices.