To become an unarmed security guard in Georgia, no license is required, but you must obtain 24 hours of classroom training.
Requirements to become a security guard in Georgia:
Must be at least 18 years old
Must be a United States citizen or registered resident alien
High school diploma or equivalent
No felony convictions or any crime involving the illegal use of weapons
Have good moral character
Have not committed any acts of fraud
Drug testing
Training:
A basic training course consisting of at least 24-hours of class instruction must be successfully completed. This course can be given by the potential employer or may be taken as a standalone class.
The curriculum includes the following subjects:
Role of security guards 
Legal powers and limitations
Ethics and conduct (including Board rules) 
Patrolling and investigation 
Communication and public relations 
Observation and note-taking 
Emergency response 
Access control 
Evidence Statements 
Report writing