The Art of SEO is a great resource if you're just getting started and are interested in White-Hat stuff. If you're more interested in aggressive marketing and

The Art of SEO is a great resource if you're just getting started and are interested in White-Hat stuff. If you're more interested in aggressive marketing and link building, stay away from the majority of forums (because they're full of guru crap) and read as much as you can from bluehatseo.com and anything in Eli's blog roll.