a progression of the knowledge evolution for a common ECF user
kanger vs vivi?
upgrade from ego?
difference between vv and vw?
where are the classies?
what is a dripper?
what's a rba?
<<< I am here after a year, and I long-since rebuild ViVi Novas and buy AW 18650s! (and I'm still at "WHY an rba?")
what's the deal with sub ohms?
best mech..
(this is where I am so can't elaborate more)

And for the newbies on this thread, here is a link I was given as a newbie and it's funny no matter which stage you are in:
4 Stages of Vaping - YouTube