You can post your lecture handouts, PP slides, or link to other sources such as podcasts you produce, podcasts from other places, videos, etc. For example:
Week 1: Introduction to Copyright Law from MIT
http://www.youtube.com/watch?v=zqtx0gA5K2s
Week 2: Learning with LEGOs from MIT
Week 3: Learning and the Brain (partial file)
Link podcast here