Market Information

Ralan's Webstravaganza
THE definitive website for speculative fiction market information. Updated fairly regularly.

Duotrope's Markets For Writers
A search engine/market listing-- I haven't used this one so much, so I can't vouch for it. Other authors I know do.

The Black Hole
Nifty little website that keeps track of the average time that it takes for a market to respond to a submission. Lots of markets to choose from.

Forums

Orson Scott Card's Writer's Workshop and Forum
Just what the link says. Open to all writers of any genre, but most folks seem there to glom to speculative fiction.

Codex Writers Online
A gathering of neo-pro speculative fiction writers. To join this (quasi)elite group, you need to have 1 professional sale OR have attended a professional speculative writing workshop such as Clarion, Odyssey, or Literary Boot Camp.

Advice

Everybody's Got Advice. . .
Ha, ha, ho, ho, hmmm. . . ;-)