Congrats!! its a great and wonderful thing. Take pictures, I brought my SLR in there and got some great ones.
Just soak it all up. Enjoy it. Even the 3am holding of the baby where you realize you just fell asleep standing up
And support your wife most of all. If she has to go c-section, there's recovery. If she tairs in the skin south of the birth canal, she may need stitches. Even if the baby just slides out without issue, shell still be in pain and recovering.
Keep your own head. Docs will push you into a lot of stuff that isn't necessarily needed or sound. Id personally look for a more spread out vaccine schedule too, rather than filling an infant with heavy metals and junk. Our child is fully vaccinated but didn't use the standard schedule, which is really to minimize insurance company's payouts.
Don't sweat the baby losing some weight, and chances are it won't want to eat all the time. Some docs pressure on that too. Its smart to listen to advice, but do your own research. Learn to read NEJM, JPeds and others. Listen to old timers. But be smart and don't turn your back to docs just because they're pushing something. Just listen to your gut - which will get upset and you'll get confused and worried.
But its all an awesome time. You'll be so proud. Congratulations!