I have two primary motivations. First, I'd like to have a better context for understanding new medical treatments that I hear about. Second, I'd like to know enough about basic human biology that my first response when someone tells me about a medical problem they're having is sympathy rather than a desire to learn what that part of the body does (my curiosity is usually followed by frustration when the person who is complaining of some organ failing doesn't even know what the organ is supposed to do when healthy and frustration is a particularly bad response). So, I guess my interest is more about understanding how anatomy relates to health.

The link you provided looks good for learning basic biology, but I got most of that stuff in my basic biology class in college. I will check out the ones that look oriented towards human biology though. I was hoping for something shorter than a text book, although a good text book recommendation wouldn't go amiss either.