Been vaping for 8 months now and use the same atty and battery still since day 1 and I have never heard of a cartridge that holds juice, I buy my juice from a friend that turned me on to vaping. Am I supose to use a cartridge? The way He has showed me is to drip the juice (about 3 or 4 drops) in the tip that in turns goes stright to the atty. New to this thing and not sure if what Im doing is right or wrong, help pls.