Wow! I absolutely LOVE this site! They give you lots of free information, practical advice, and nifty downloads that contain more than you could ever want to know about this science.
Here's a three-part video from ION Interactive - the folks that bring you "No More Landing Pages". Click Here.
Here's a TON of cool PDFs that you can download and reference. Some sales stuff too, but if you are just learning about this, chances are this will all serve you well!
Happy reading!