Links to US forum threads.
Druid FAQ
Rogue FAQ v4.1
Lockpicking FAQ
Priest FAQ v2.8
Unofficial Priest FAQ
Hunter Pet FAQ
Shaman FAQ 1.20
A Guide to Shaman Talents v1.07
Ciel’s Warrior Guide
Warrior Reference Guide
Mage Class FAQ
A guide to Mage Talent Specs
A Guide to Mage Equipment
A Paladin Talent Guide
Warlock FAQ
Professions FAQ
And a few from the European forums: