I used 36mg during my 2 month transition to Vaping. Although it was crap marker sized 510s and black/clearo twist on cartomizers
You can't get much volume of vapour off those, so high concentration is usually ok. (unless it gets in your mouth lol)
Subtanks rock, and should be entry-level for people these days. I still use around 6mg, but mainly because I'm at work and don't have huge time.
Accidentally put in some old 18mg Skittles one day and went to a family BBQ, they all thought I was on m*th ... lol. Jittery and anxious
6-9mg would be tops for 0.5ohm starting out. VG types can mess with people, as can PG in general.
Of course your body is clearing out tons of toxins, most of which were sidelined due to the constant intake of more toxins.
Hell I even had some withdrawal symptoms from a few of the 4000 chemicals I was inhaling
One type of juice from CN gave me hives on my chest, and there are 'quit zits' from detoxing
Sourcing good VG, Nic and flavours are key. The markup on store juice is really insane. My cost is $20-25 / 750ml depending on flavouring mainly