Depends what you are doing. I started as a secondary shooter for events, and I just watched what the main shooter was shooting, and got something different. For e.g, if the main shooter is shooting the person on stage, you can shoot reaction shots of the audience. Also get angles that the main shooter isn't getting. For e.g if he/she is getting wide's, you get tight shots, or if they are shooting from the back of the room, you shoot from the side of the room. In short, try to tell the story of the day.
Are there websites aimed at photographers in Ohio? I'm in London and there are lots of websites advertising jobs for photographers.