Guild Wars 2

Hi, I was just wandering where or what gear is best to get for a GS warrior in WvW. Do you farm it from dungeons or buy it with karma? Craft it? Only other Mmos Iv played are Aion and Wow and Gw2 doesnt seem to have a pvp point system to buy pvp gear with so im not sure :O

Ok. thanks guys!

Ok! Are there certain traits that are must haves? or is it perty simple? Obviously the bladetrail trait, anything else?

I just recently hit lvl 80 and would like to try the GS build in pvp. So i was wandering if anyone could give me a break down of the build or a link to read up on the build. Also any suggestions on other builds that i wouldnt mind either. Thanks in ahead.