Here are some various pieces of information I think are very useful and helpful in learning about the Rosen Method.
Links
www.RosenMethod.org
www.RosenJournal.org
www.RosenSouthwest.com
Find A Class Near You
www.RosenMethod.biz
Blogs
http://www.helmi-boese.de/en/rosen-method.html
http://www.abmp.com/textonlymags/article.php?article=164
Books

Rosen Method Bodywork: Accessing the Unconscious through Touch by Marion Rosen with Susan Brenner by Marion Rosen with Sue Brenner

The Rosen Method of Movement by Marion Rosen & Sue Brenner

Rosen Method: An Approach to Wholeness and Well-Being Through the Body By Elaine L. Mayland

Touching the Body, Reaching the Soul: How Touch Influences the Nature of Human Beings by Sandra Dillon Wooten

Relaxation Awareness Resilience: Rosen Method Bodywork Science and Practice by Ivy Green

Body Sense: The Science and Practice of Embodied Self-Awareness by Alan Fogel