re: How difficult are babies really

First, congratulations! They are not difficult at all. You just have to realize that she will be totally dependent on you. TOTALLY. One thing the nurse told me when our daughter was born (she is three now) is to not wipe upwards. Good to know.
We were lucky in that sleep wasnt too bad - my wife breastfed so I didn't get involved too much except when she started pumping/storing. Just wait until she gets older.