Hello everyone :)

I used to play Cataclysm beginning of last year and decided to come back to WotLK! :)
If possible I'd just like some friendly advice haha! :)
Any tips about the server?
I'm relatively familiar to Molten but haven't really been keeping updated the last year or so, thus I'd just like to know of any major changes and important information!
What's the pvp looking like on Alliance side?
I started off as a night elf hunter, any remarks regarding my class?
I mainly enjoy pvp (BG's and Arenas) but obviously will take a while for me to obtain some decent gear and to level to 80...
If there's anything else I need to know please just shout :)

Thanks in advance! :)