@DRB92, you can use lots of different atomisers or tanks with your Snowwolf mod. It has a Female 510 connector and atomisers or tanks have a Male 510 connector, so you can mix and match.
And RBA means Rebuildable Atomiser, there's 2 different types RTA's (Rebuildable Tank Atomisers) and RDA's (Rebuildable Dripping Atomisers).
RTA's are like a tank and RDA's are very different but are easier to work with than RTA's due to the fact that they cannot suffer airlocking (vacuum forms in tank and pressure cannot equalize, then liquid cannot wick and you end up either toasting to burning your wicking), but to get the best experience with an RDA you're best using them with a Squonk mod.
And a Squonk mod is a specially designed mod that has a liquid feed bottle that when you squeeze, forces liquid up through a special 510 connector (has a hole in centre pin for the liquid to pass through).
And ask away, it's how we learn new things. And there's no stupid questions, unless it's can I run my 0.1 ohm atomiser using an 18650 cell, the answer is no and most importantly it's stupid and dangerous.