Exercise

Share what you've found so far - use the discussion tab for this task. Post links to the resources you found.

Concluding discussion

Were you able to find what you needed?  Were there good repositories or sources of content that were particularly valuable? How about any that were hard to use? Was it easy to tell whether or not things were open, and what the license was? 

How might you use the stuff that you found? Is it sufficient for teaching someone about the topic you've chosen? What's missing and how might you fill the gaps?