Hi, Yes, this can be a confusing place. E-juice is really best in my opinion when
it is American made. It is flavored nicotine with PG or VG or both in it. Also the flavors are
from tobacco, to fruity, nutty, or anything else you might imagine. They usually come in small drip bottles from 5mg to 30 mgs. You have to order your nicotine as to how much
you feel you might need to satisfy your craving. A heavy smoker, likely about 24 mgs
nicotine, or less if you smoke less. This liquid is placed into batting used in the ecig,
mouth piece, and you inhale it till you see the flavor is not there or a bad taste
develops. Once you get the knack of it, you won't let the bad taste start before you add more juice.
I used the larger PV and I drip right on to the atomizer. The atomizer is the heating
element that turns the ejuice into vapor.
Hope this helps.