Class

Hey im new to the game and have all the campaigns bu i dont know which class to be im either going to be:
N/Rt
Rt/N
A/N
A/Rt

I dont know which of those choices to be so i would really appreciate the help.

N/Rt- Generally a healer role
Rt/N-Generally a MM role. Bad for humans because minion targetting is hard.
A/N and A/Rt don't need to be separated. Eventually you can change your second so all you have to worry about is your primary. So on that note:

N-Soul Reaping is their primary attribute. SR allows for amazing energy management. Amazing support and damage through curses line.

Rt-Spawning Power is their primary attribute. SP lengthens weapon spells and gives spirits more health. Probably the worst attribute. Make good hybrid healers/damage dealers with restoration and Channeling lines.

A- Critical Strikes is their primary attribute. CS gives good energy management and damage boost. Very good damage from dagger skills.

Hope that helps.

Make them all and see what you like. We don't know how you like to play so we can't tell you what you want.

You have 8 slots. Make them all and play them. Figure out which ones you want to keep playing.

You can change secondary class, so the real question is just whether you prefer to play a necro or a sin. One is slow caster, the other is super-fast melee, so they don't have much in common regarding their playstyle - you lose nothing by trying them both.

I have decided to go Rt/N.

So what attributes should i get up?

The great thing about GW is that you can change attributes at any time, provided you are within a town or outpost. Set up whatever you'd like! That's the glory and crowning achievement of this game. It lets you play how you like. Sure, there are people who believe that you shouldn't play the game unless you do it a certain way, but that's their problem! Do what you want!

How about just search the forum for answers instead of hoping we will do the work for you?

http://guildwarsguru.com/forum/forumdisplay.php?f=224

QFT

On topic: Id not worry about secondary professions as they can be changed easily, just makes sure you like the appearance of your character.