Great intro post, and well done on getting down to 3mgs so quickly too! I've been vaping for about 2 months now, and i'm still using 12mgs and 6mgs, in my various MTL & Sub ohm tanks. I tried 3mgs and wasn't quite getting enough nic..so i'll be working on that for a while yet.
No need to fear asking anything basic..cos I did, a many a time! I knew nothing about vaping when I started..we all gotta start somewhere!