Also, while from fall of 2010, here is a general reference guide google put out that has SEO basics which is good short reading to help bring you up to speed on things.
Again, it is from 2010, and some things have changed, the good basics here will still do you good.
http://static.googleusercontent.com/...rter-guide.pdf
(Ps. the first page jsut has the title in the middle of the page, so when you first open it, depending on your zoom level, it may just look like a blank page, just scroll down)