You may find the following links helpful to gain more knowledge on relevant topics:

National Registry for EMTs

National Association of EMTs

American Ambulance Association

American Heart Association

EMS Magazine

JEMS Online Emergency Services Resource

You may also find the following links helpful to gain knowledge on Continuing Education:

Continuing Education Coordinating Board For Emergency Medical Services (CECBEMS)

CE Solutions EMS Continuing Education(EMS-CE)

Emergency Medical Certification(EmCert)

EMInet