Here’s a link to slides [Keynote, PDF] for a basic course on Graphical Models for the Internet that I’m giving at MLSS 2011 in Purdue that Vishy Vishwanathan is organizing. The selection is quite biased, limited, and subjective, but it’s meant to complement the other classes at the summer school.
The slides are likely to grow, so in case of doubt, check for updates. Comments are most welcome. And yes, it’s a horribly incomplete overview, due to space and time constraints.