For Parents

Illness and Injuries
Healthychildren.org symptom checker
Great resource done by the AAP in which you can look up illnesses based on symptom or body part, and get a complete explanation of possible causes, things to try at home, and signs that you should come see your doctor
Sports Injuires
Information about sports injuries and sport-specific safety tips written by the American Association of Orthopedic Surgeons. Also includes some information on non-sport related orthopedic problems (scoliosis for example), and non-sport related safety tips