Any vape gods willing to help a noobie?

Hi everybody,
Ok to start off I have a SMOK Priv V8 with a medusa coil 0.25om/35-80/best55-65w. And i use Naked70vg/30pg What the guy in the vapeshop told me is better then the baby beast that it came with(burnt threw both coils in a month and tried to use them as long as possible) and left with 2 for 12 bucks( with a couple problems trying to find a coil to replace it).So my question is..
Can you help me understand what my options are for tanks/coils(dumbed down as much as possible)