Being hazmat certified can be an extremely useful skill in many situations, from helping out after a disaster to finding a job. Being trained to deal with hazardous materials will allow you to work in a variety of industries including oil and chemical spill clean, medical industries dealing with contagious illnesses and other jobs such as driving hazardous cargo or owning a gas station -- gasoline is considered a hazardous material.
Find out exactly what kind of hazmat training you need. The requirements can vary depending on the setting you will be using your training in. For example, when dealing with oil spills you may need a hazwoper hazmat certification, while gas station employees may require a simple 4-hour hazmat training to deal with small oil spills.
Learn your state's requirements and keep in mind that if you need to travel interstate you should look for national requirements. You can find these requirements at your state's OSHA or Occupational Safety and Health Administration website. Most states will require you to take an initial 40-hour course, depending on your industry, and a short refresher course each year.
Look on your state's OSHA website for approved or sponsored hazmat training courses. If there are none available, you can easily find training schools online but you must make sure that they are OSHA approved and certified, otherwise your certificate will be meaningless. You can also call the department and ask about recommended courses or schools.
Attend a certification program. Your employer may pay for and arrange training or you can do it on your own. This program should go over state and national health and safety laws regarding hazardous materials as well as giving you training in appropriate handling of these materials.
Receive your certification for passing the program and all the related testing. You are now able to work with hazardous materials.