Something no one has mentioned yet is to be mindful of the quantity of nicotine you consume.
As you progress you might start doing your own wicks and coils and the better you get at it, you'll make more vapor and use more nicotine. A lot of people cut down on their nicotine level once they start using rebuildable atomizers. Some people seem to never have a problem with vaping 10ml of 36mg nic per day, others might get headaches, tinnitus, dizziness, etc. with less than 2ml of 12mg nic.
As you progress you might start doing your own wicks and coils and the better you get at it, you'll make more vapor and use more nicotine. A lot of people cut down on their nicotine level once they start using rebuildable atomizers. Some people seem to never have a problem with vaping 10ml of 36mg nic per day, others might get headaches, tinnitus, dizziness, etc. with less than 2ml of 12mg nic.