Apart from the regular Exchange, Dev net articles, forums and community help available at Adobe’s official website, following are some of the links which are dedicated to Fireworks. It includes forums, blogs, extension posts, design posts, workflow descriptions and many other cool stuff dedicated entirely to Fireworks.
There is also a Linked In group. Catch up on some of the interesting discussions going in there. There is also a google group named Macromedia Fireworks.
In case you guys find some other resources about Fireworks anywhere on the web, let me know so that I can highlight it as well. Let us spread the Fire which Works!