The Irish Centre for Shamanic Studies
www.shamanismireland.com
A good article about soul retrieval by Sandra Ingerman
http://www.sandraingerman.com/soulretrieval.html
Holotropic Breathwork – amazing and deep process for healing and self-exploration
http://www.holotropic.com/about.shtml
A great page about Spiritual Crisis (Spiritual Emergency)
http://spiritualemergency.blogspot.com/