This course will become read-only in the near future. Tell us at community.p2pu.org if that is a problem.
(Creative Commons image zaqi)
This is not a joke! We are born to learn. Let's celebrate and recognize this! (I think this course/challenge might just help us all learn a lot about the P2PU.
http://www.p2pu.org/en/groups/walking/ needs login. What is public URL? Photo by zaqi - http://flic.kr/p/2SqBe3 Photo by zaqi - http://flic.kr/p/2SqBe3