The following is the best three sites to go to for to find out: Clubs in your area, Members, and areas to shop for Judo Gear: Books, Videos, Uniforms, and Supplies. If you are considering to become a Judoka of Judo and to train yourself for more such as to compete than these three sites are a must know for you.
USJA: The United States Judo Association
This site is one of America's service-oriented support organization for players and clubs. They work hard to provide accurate event listens for tournaments, clinics, and camps. You can gain contact information to meet senior members, new members, as well as clubs located in your area. It is also a great site to learn about, and purchase books, videos, uniforms, and other supplies at reasonable prices as well as speedy, efficient delivery. They assist coaches in building their clubs, and provide them with membership rosters, forms, and other support, all at no charge. Best of all it is a non-profit educational organization, profits return to judo, keeping membership costs low and services high.
USJF: The United States Judo Federation
The United States Judo Federation is a non-profit organization that provides national standards and guidelines for the development of grassroots judo for its students and members. The vision of USJF is to have Judo in every American community and school and their mission is to serve and support its members in the American judo community while upholding the principles of mutual welfare and benefit. Here you can learn about upcoming events, clubs, and camps that are going on throughout the United States. You also get the chance to find out how other Judokas are doing with their training, and if anyone gets promoted.
USA Judo
http://www.usjudo.org/index.asp
USA Judo is mostly like the other two sites. You may become a member of this site and learn about events, Judo in the media, as well as go shopping on their site. Here they have books, videos, uniforms, and supplies for reasonable prices and with quick delievery.