Go look at the Foundation Fighting Blindness website an organization that helps educate and raise funds for RP and related conditions: www.blindness.org. Also, if you live in the U.S. contact your local depart of Services for the Blind, or Lion's Club, they can help steer you in the right direction about Orientation and Mobility classes and registering for a guide dog. Most people start of learning to use a white cane first and then if they decide to they can register for a guide dog. Generally, there is a wait list for guide dogs and the training period is pretty intensive about 3-6 months. Also, the above organizations can help you get in touch with support groups.
Good advice from berrywoo.