What sort of health and safety? Occupational, environmental, first responder, disaster response, etc.?
US government agencies like the Department of Health and Human Services (DHHS), Federal Emergency Management Agency (FEMA), Centers for Disease Control and Prevention (CDC) and Environmental Protection Agency (EPA) have a great deal of information and educational material.
If you need to have a certification in some sort of training, or at least advanced training, however, there is a charge for that.