There are many guides for WordPress SEO spread throughout hundreds of blogs across the internets. Some of them have fairly useful strategies and others are simply a waste of your time. The default WordPress theme is pretty descent but when it comes to using other themes you never know how good, or bad, the theme was built for optimal SEO friendliness.
I have compiled what I believe the be the definitive sources for WordPress SEO. Below you will find a list of top search engine optimization tutorials, the best plugins to use, and some awesome wordpress themes that take care of almost 100% of your SEO needs with little tweaking.