The title of this post says it all. Jim Westergren has compiled a nice guide on how to SEO for WordPress.
Topics include:
Using the best URLs
..Handling URL Canonization
Title Tags
..The best title tag solution for advanced users
Headings
Navigation
Site Map
..What about a Google Sitemap?
Design
What About the Meta Tags?
CSS Positioning
And all that is just in Section 1. Sections 2-4 discuss How to Craft Your Articles, Increase User Interaction, and Get Links.
Definitely worth checking out. Nice job, Jim.