Advance Wars Series

Advance Wars Bunker
Guides, hints, and discussion areas for each game in the series.
http://www.awbunker.com/

Advance Wars Net
Fan-site, with damage charts, media, and walkthroughs.
http://www.advancewarsnet.com/

AW Revival
Offers walkthroughs and tips.
http://www.awrevival.netfirms.com/

Wars World: Advance Wars
Offers specific game information, screenshots, and FAQ. Also has discussion forums.
http://advancewars.strategyplanet.gamespy.com/