Forget about "equals x regular cigarettes", that is an exceptionally tricky one. Not only are those advertising numbers, and hence not all that reliable, to be polite. Plus, you vape differently from how you smoke, most of the time. Not to mention the learning curve in the beginning.
I vape pretty heavily, and I refill my carts when I change my (normal 510) batteries, which I need to do about every hour or so; althought the carts would last me a bit longer.
You don't need anything like a refill kit or anything, liquid comes in dropper bottles, which is all you need. (With a 510 and all proper cart models. Cartomizers, now, different story there.) While there are a few cart mods out there where a syringe makes refilling them slightly simpler, you will find about that when you try cart mods. BTW, I tried several, and now am perfectly happy with Fluval + straw mod. You might want to investigate that one.
I vape pretty heavily, and I refill my carts when I change my (normal 510) batteries, which I need to do about every hour or so; althought the carts would last me a bit longer.
You don't need anything like a refill kit or anything, liquid comes in dropper bottles, which is all you need. (With a 510 and all proper cart models. Cartomizers, now, different story there.) While there are a few cart mods out there where a syringe makes refilling them slightly simpler, you will find about that when you try cart mods. BTW, I tried several, and now am perfectly happy with Fluval + straw mod. You might want to investigate that one.