The nice thing is you can create a RPG char but you get to pvp with him aswell...
I would suggest making at least one RPG character, get that char ascended and then hopefully at that stage you are lvl 20 then you can always create a pvp char, once you have a better understanding of how to play and what skills work well together...
The other awesome thing is there are soooo many spells however you can only use 8 at a time...hehehe...makes for unique interesting play...
Play the storyline and do the main missions, it's great to enter the GW mindspace...