I will be running a seminar at GenCon 2013 titled "How to learn Roleplaying Game Design". As part of this, I will be providing each participant with a free DVD full of goodies and resources to get them started in the craft. My original intent was to stick to excellent design podcasts, but I recognize there may be other free resources worth sharing.
What free, sharable game design resources would you recommend I add? Any specific podcast episodes, ebooks or other sharable digital media would be appreciated. Show me what you've got!