So I have just gone back to vaping after smoking for a long period. I smoked the cigarettes with the highest nicotine content that I know of on the market; natural american spirit, which I guess have more nicotine than even Marlboro by far. So I bought the 9 mg vape oil to start out with. But is that less than what I was smoking? I don’t know how it all works. I guess american spirits have like 21 mg, but I don’t understand if that’s in the whole cigarette or one hit or how this all works, anyone know?