Cone Crazy: Includes forums, technical assistance, calendar and links.
Midengine Racing: Dedicated to competition with midengine cars. Offers information for setup and techniques used.
San Francisco Region Solo2 Events: Events calendar, site maps, run group schedules, results and information for newbies.
SCCA Solo II: Useful information about this type of racing and a guide for people who are interested in getting started or would like to learn more about prepration, driving techniques and car setup in general.