Google now offers a guide in PDF form to get you started with SEO best practices. The guide is chock full of great tips on navigation, meta elements, website promotion, headings, and much more.
So, the next time we get the question, “I’m new to SEO, how do I improve my site?”, we can say, “Well, here’s a list of best practices that we use inside Google that you might want to check out.”
Read more and download the PDF guide at Official Google Webmaster Central Blog: Google’s SEO Starter Guide.