STEP 2: The Level 4 Referee Course provides participants with education and training to become a referee. To successfully complete the course, a participant needs to pass the online examination and print their Statement of Completion Certificate. STEP 1: The Football Australia Online Laws of the Game Course provides a basic introduction to the Laws of the Game and their interpretation. To become a referee, you must be 13 years of age or over and you will need to complete the Football Australia Online Laws of the Game Course as well as completing a Level 4 Referee Course.