Won't try the storage questions as that seems to be covered. As for the cartridges, if you are meaning keeping track of the partial-fills and what flavor they are I take a very lazy route. First method I use is to just use a small rubber band and attach the cart to the bottle. The other method I use is to color code - not with a list that I have to keep up with, but using small, dental rubber bands. But, no lists. I just place the same color band(s) on the bottle as the matching cart (e.g. yellow band on the vanilla spice bottle and a yellow on the cart, a blue and a red band on a Redbull bottle and a red and a blue band on the corresponding cart). I was never good at keeping lists and updating. My mantra is usually "I'll do that later, I am sure I will remember what this is...." Ha!. after a week I would have no idea what anything was.