Hi Amy. Another Cincinnati vaper here!
Read this blog about
juice attachments, paying particular attention to the parts about
cartomizers and
cartotanks:
Proper Terminology: Is it a carto, a tank, or what?
Then read this blog on how to set up a cartotank:
Baditude's Cartotank Setup Guide
My recommendation is to get an IBTanked pyrex cartotank. A little more money, but it will be well spent and be a long term investment. The pyrex glass is very durable, but replacement glass (should you break it) is very affordable from the manufacturer. You can learn about them in this blog:
IBTanked cartotanks - Review
(Click below images to enlarge)



How a pre-punched carto works in a tank: With each drag on the carto that is in a tank, the suction created pulls juice from the tank thru the pre-punched holes in the carto to replenish the juice that was vaporized.
Cartotanks are available at IBTanked in three tank lengths: halfling, standard, and extra long. The appropriate length cartomizer must be used for whatever tank length you choose.
Tank diameters are available in 15, 19, 22, and 25 mm to fit the size battery that you are using. For instance, the 15 or 19 mm diameter look best on an eGo battery.