Review: Good guide on SEO
Rating: 5 out of 5
Date: 03 9, 2013
I found this guide very simple to understand and felt that the author was very knowledgeable.  Many SEO guides will tell you to sign up for 100 directories, do 100 guest posts, etc.  This guide gives you a nice 80/20 perspective of what works and doesn't work.  I would recommend it.