The correct address is tw.battle.net and it works for me.
As for vpn when need arise I usually use the trial of http://wtfast.com/ , it last 20min but you can use it over and over.
When you log on a realm type "/join english
" to get in touch with the community members.
WoW English/Chinese glossary
(2000+ translated words) found on wow-in-chinese.jfs-web.chEnglish speakers are consolidating on the same realm for Cataclysm check this thread