And congrats on your first flock! You may need to get your cock more hens as he can mate her to death, depending on his vigor. Generally 1 rooster to 10 to 12 hens is a good ratio. So keep an eye on your hen and rooster. If she starts to get bare spots on her back, he is over mating her.
Definitely stop by our learning center here on BYC for lots of great articles on caring for your new birds. Kelsie has left you with the link.