Machine Learning on the Cheap and Easy
thunderboltlabs.com
thunderboltlabs.com
Not to try to highjack the post, but for those interested in resources for computer vision see my post from a few months ago: http://colinlea.posterous.com/on-self-guided-study-of-comput...
I've found that reading books from other ML domains helps out in understanding the application and getting ideas on how to approach the problem.