When i was visiting the Films For Action website, I learned about Festival Fire which is a gathering for cultural transformation. They showcase new low/old and green technologies, and they have lots of fun while at it, too.
DIY.org is a fantastic website to learn new skills for free. Although designed for kids, it is a great resource for adults, too. They have good modules on gardening, fishing, growing mushrooms, sewing, crocheting, etc.
What are some other groups, events, and websites that people can go to learn permie-esque knowledge?