Here some resources for coaches:
Heads Up Concussion Training Course
Center for Disease Control – Injury Prevention and Control – Traumatic Brain Injury
Center for Disease Control – A Coaches Guide to Concussion
Center for Disease Control – Concussion Policy
Sports Related Concussions – Boston Childrens Hospital – Download
Sport-Related Concussion in Children and Adolescents – American Association of Pediatrics – Download
Concussion Overview – Web MD Article
Concussions – Mayo Clinic Article