Columbia Public Library, 106 M. Metter Avenue, will host First Aid and CPR Training at 9 a.m. this Saturday, Oct. 21. Registration is open to earn a certification that satisfies OSHA-mandated job requirements and is valid for two years. This training is ideal for scout leaders, babysitters, health care professionals, and more. Must be 12 years or older to attend. The class is led by Columbia EMS. Space is limited, so call the library at 618-281-4237 to register.