Congrats, my first child was a girl born on January 2nd. She is a sleep right now in my left arm as I type this. Sleep is fun that first month, I remember from December 31st to January 4th, I got 15 hours of sleep total. It gets better, that first night she sleeps more then four hours, you will freak out thinking "omg I need to feed her", but honestly they will let you know when they are hungry. The fun has just begun and I say this being almost four months into the fun.
Congrats man, kids are a complete roller coaster! I love my son but sometimes I think hanging him by his toes would keep both of us safe! Take lots of pictures, you'll need them when she's 15!