The Safety Zone blog at Chemical & Engineering News has put together of lab safety videos, arranged by topic: personal protective equipment, fume hoods, radiation, etc.
Safety Data Sheets (SDS), or Material Safety Data Sheets (MSDS) are guides to hazardous materials, often provided by chemical manufacturers and distributors. Also see MSU MSDS Services. The sheets include:
Physical and chemical properties
Toxicological information, toxicity
First aid measures
Accidental release measures
Personal precautions, protective equipment and emergency procedures