Believe people when they say "it goes fast", it really does go fast.
Politely listen to people's opinions of what you should do and then do what YOU feel is right. And you will get opinions from everyone.
Nap when baby naps, babies are exhausting.
Follow your instincts.
Picking up a fussy/crying baby will not spoil them, it will make them know you are there for them.
And congratulations!