Google released on Nov 12 a hands-on SEO optimization starter guide, covering areas such as meta tags, url structure (WP Permalinks), navigation, links, content and images. There’s a section about robots.txt that it’s quite interesting, as it shows how to stop giving our page reputation to inappropriate sites.
Check Google SEO Starter Guide post to download the pdf file!
BTW, I like images, and this one has a lot of images! 😛