Rhody, congratulations. Enjoy every moment because each goes by so fast. She's only an infant for the blink of an eye. Before you know it, she'll be in 6-month clothes, and then 12-month clothes, and then she's no longer your little baby — she's a toddler with her own ideas about the world.
Love her. Read to her. Be her hero. Teach her how a man treats a woman by treating Mrs. Rhody right (she'll get it long before she can articulate it). Be her shoulder to cry on. Comfort her in the night when she's sick or scared. Play with her, even when you don't want to. Be firm but not domineering. Tickle her. Burp her and change her diapers. Read to her. Read to her.
Love Mrs. Rhody, and don't let the romance die just because you're new parents; your relationship needs nurturing, too. Give Mrs. Rhody time alone, and take time alone yourself. Being on 24/7 is a recipe for ... well, not disaster, but tension in the household.
Buy John Rosemond's "New Parent Power" and take from it what works for you.
Realize that your baby is her own person, even as an infant. She'll seek and find her own water level long before you realize what it is. Embrace that. She's yours, but you don't own her.
Take pictures. Take video. Burn them to CDs and DVDs.
Be a man. Be THE man.
Love. Love. Love.
Congratulations.