As a father of four (soon five) - resist temptation to buy gadgets (simple walkitalkies are ok), love your partner, tell her shes beautiful and sexy and not AT ALL looking like a whale (because thats what she thinks and its not true), dont be afraid to handle the baby (they are not made of china, really. You really need to screw up to hurt them and you WILL NOT).

Be prepared of sleepless nights (take turns when baby cries). Receipe for calming crying baby Check the nappy, if thats ok, its feeding time (if not medically impossible, prefer the real thing. There are helpers if it seems its not working. 99,9% women will have milk. You love titties, babies do too). If that does not help, just walk around and talk with it. Take turns.

Its not that complicated actually - gets harder when they learn to speak :D