You can read about CDS HERE and join online HERE . CDS membership includes automatic membership in the UNITED STATES DRESSAGE FEDERATION.
Join the BEAR VALLEY SPRINGS DRESSAGE CLUB
You can read about Bear Valley, and its Dressage Club, and print out a membership form HERE.
Join the US EQUESTRIAN
US EQUESTRIAN (formerly USEF) is the national equestrian federation of the United States. Go to its website HERE.
Join the WESTERN DRESSAGE ASSOCIATION
Read about WDAA and join by going to its website HERE.
Join the CALIFORNIA WESTERN DRESSAGE
Read about CAWDA and join by going to its website HERE.