War of the Ring Links
Veldrin's War of the Ring Forum - full of discussion about the online client and other aspects of WotR
Boardgamegeek War of the Ring Forum - another good forum, focusing more on strategy and variants
Summary of rules changes in the Collector's Edition - for people who know the previous rules and just want a diff
Veldrin's War of the Ring Site - home to the official FAQ and other resources
There aren't any good expansion strategy articles. Write one!