Ask at the feed store, ask at a poultry club, or county extension office for people that have chickens, if this is your first rooster, what you want is a rooster that is nearly a year old, and who is so nice, he never quite got culled. A rooster that is raised in a muli-generational flock is best too.
No guarantees, roosters are a crap shoot, but you have a better chance with an older rooster.
Mrs K