WordPress is one of the best, if not the best content management systems when it comes to SEO.
That being said, spending time on your WordPress SEO might seem like a waste of time, it most definitely is not.
Optimizing your site to the best practices outlined in this article will help you improve your rankings, gain more subscribers and have a better website in general.
If you're not using an SEO plugin yet, grab the WordPress SEO plugin - http://bit.ly/H27iw9 - and get going.
This Definitive Guide - http://bit.ly/H26Q11 [pdf] covers quite a lot of ground and is therefore a long read.
Check out The table of contents - http://bit.ly/H26V4I for some quick jumping
By Joost de Valk - http://bit.ly/H271JH ;