When dealing with hazardous chemicals such as paint thinners and paint where is best to get information on how to safely handle the product?

The best source for information on safely handling hazardous chemicals like paint thinners and paint is the product's Safety Data Sheet (SDS), which provides detailed guidelines on safe usage, storage, and emergency measures. Additionally, manufacturers' websites often have safety information and handling instructions. For general safety practices, the Occupational Safety and Health Administration (OSHA) and local health departments also provide valuable resources and guidelines.