We just relaunched LearnOSM - the step by step resource for learning OpenStreetMap. LearnOSM was launched in 2011 by the Humanitarian OpenStreetMap team for the workshops they are giving world wide. It has grown into a resource used by OpenStreetMap newcomers and trainers well beyond its roots in humanitarian aid and disaster risk management.

Read up on the new LearnOSM and learn how to contribute to translations and other improvements by Jue Yang, the designer and developer behind the new face of LearnOSM:

http://mapbox.com/blog/learnosm-with-new-design/