@d2lover The best thing I can really advice you is to read Grip's posts in this thread.
This and this. This should give you 90% of intormation that you really need for joining in the PvP fun
After that, pick a character you want to make and we'll help you theorycraft and gear it properly. It's fun to jump around and pick multiple classes etc but I think you'd be much better by hard deciding on your first character and then sticking to it for a while until you get the basics. Grip's posts does have a suggestion for best starting characters and I think those are some of his better posts overall and worth a read.
This and this. This should give you 90% of intormation that you really need for joining in the PvP fun
After that, pick a character you want to make and we'll help you theorycraft and gear it properly. It's fun to jump around and pick multiple classes etc but I think you'd be much better by hard deciding on your first character and then sticking to it for a while until you get the basics. Grip's posts does have a suggestion for best starting characters and I think those are some of his better posts overall and worth a read.