Congratulations! I have 2 boys, a five year old and a two year old. It's amazing how something so small can have such a huge effect on you. I didn't realize it until I held my first born for the first time.
I'm the only one of my small circle of friends that has kids. One of them asked me what it's like to be a father. The only way I found to describe it is: it's like walking around for the rest of your life with your heart outside of your body.
And get used to the sleepless nights. I can't remember the last time I wasn't tired. But I wouldn't trade it for anything