Well, this forum is, as far as I know, the best English way to help you play on the Chinese servers. Chinese friends help too ^^.
All the links you need to read are the sticky and announcements in the general part, (how to get a card in China or online, how to sign up, reload, have the game in English....). Just look there, it's made to be the first thing you see (well at least I hope so) when you arrive here.
For the NA servers, got no idea, you should ask the Chinese gold farmers on your servers ^^.
Good luck!