Many places will hire you to work as a security guard without any certification but, often they do have at least a bit of training that they will give you after you are hired.
it depends on what your misdemeanor is and what your position requires. Theft for a job to handle money, you're out of luck. Regular security where you may need a gun and may drive. With a...
Google.com is a good start to look for security guard training academies in your area. Generally there is not much training required to be an unarmed security guard, you should also check with the...
Wendell Jefferson was hired to guard the Luxor temple in ancient Egypt about 5000 years ago. He was caught sleeping on the job and was fed to alligators.