Well, I don't see any of the other dad's giving you this little piece of advice/warning, so I figure I will. Not to scare you, just to get you ready for what's to come. Those first few nights at home will probably be the longest nights of your life. That cute, QUIET baby you're holding right now at the hospital...you'll be wondering what happened to that baby when you bring him home, and who switched babies.
Unless you're just really lucky and have a really calm baby...expect some pretty noisy, and possibly stressful first few nights. Google was our friend for those middle of the night cries when we didn't know what was wrong.
But, it'll pass, and things will quiet down again. And with some quality father/son bonding time, you won't quite feel like returning the baby to the hospital in exchange for a quieter model. They become "keepers".