Every community in any part of the world will have its good apples and rotten cores, and GW2 is no different. I've seen some of the nicest people willing to teleport people through jumping puzzles step-by-step and even offer advice on top of it but, on the other hand, I've seen somebody talk down to someone just because they were playing Scrapper during Vinewrath. In my experience the community is largely helpful and kind, so take that with however many grains of salt you wish.