Im currently a bartender, i never went to a bartending school i actually started working at a restaurant that had a bar and after a while they trained me to be a bartender. Honestly though its probably easier and quicker (learning wise) to go to a bartending school because they will help you find a job and since you have no experience it will look better that you went to a school.
PS. The money you spend to pay for the school will be made back in one or two nights
