As horrible as it is, alcohol can cause some disturbances in peoples lives, including injury and sickness. So you should always know the risks involved with serving alcohol to people.
To brush up on the effects of alcohol, you could visit the governments site, or any of those listed below: Drug Facts: Government drug website Alcohol and drug use Dangers of Alcohol More Dangers of Alcohol But working in a bar leaves you responsible for giving people their drinks, and serving the right people the right amount. This can be harder than you expect so make sure you remember your RSA training when you get your responsible service of alcohol certificate.