Great article on getting to know your new incubator, and that they aren't just "plug and play". First time incubator users, read this and save yourself a lot of trouble and anxiety!
Great article in outlining which roosters should be "allowed" to breed. A lot of behavior is genetic, and even though handling (or mishandling) can change a rooster's behavior, going for the nice and natural behaving ones to repopulate the flock is a good way to ensure naturally behaving roosters in the future.