While researching again I came across this pearl from Google.

They have a keyword toolkit that has a few tools in it that most of us use, and if not then you should have a look.

 At the bottom of the Google toolkit page is a PDF on Basic SEO.

I've picked up most of the techniques found in this PDF here but it is nice to see it all in one place for quick reference.  For those of you that want a refresher or an introduction to SEO here's the link.

Google SEO PDF 

Craig