I've been working on an open resource for people interested in learning and teaching Python. I'd love some more eyeballs on the project, and I will happily accept Pull Requests. I'm happy to help you get set up on the project as well, so don't feel like you have to have a certain level of knowledge to help out; your perspective would be quite useful.
github page: http://github.com/ehmatthes/intro_programming
hosted version: http://introtopython.org
ways to contribute: https://github.com/ehmatthes/intro_programming/issues/17