rossco
! Be there. Every day.One hint: I got overloaded in the delivery room after about one hour
. Maybe it's better to wait outside or elsewhere?and... CONGRATULATIONS!!
Is this the first for both of you?
Be prepared for lots of sensory stuff: Smell of diaper pail and baby lotion; sound of baby crying; sound of rattly or squeaky baby toys. Also be prepared for the kid to throw off schedule and organization; and to get a lot less sleep because you will wake up whenever the baby does. For the smells, it helps to chew strong gum like mint or cinnamon.
Beyond that, it really is wonderful to get to know a small human being. They develop so quickly; it seems they are learning a new thing every day. I loved to read to my little sister; even when she was very young she would quiet at the sound of a human voice, as though entranced. Another thing that's great to do with a baby is touch: My little sis loved to have her back rubbed. Also, when I could get away with it (because Mom thought it was horribly dangerous) I used to swing her up in the air... you have to wait till they can support their heads for that though. Also, you have to check out a newborn's reflexes--they are just amazing. My little sis used to grab my finger in her hand so tightly that my fingertip turned blue!
Baby: Big change, a lot of wonderful things, a few very annoying ones that are eventually worth it.
My DH and I have four sons and a daughter aged from 14 to 26, and two grandsons,both aged 5. Yes, there are moments,
but overall it has been such a wonderful experience that I would willingly do it all again.BTW so many of us in our immediate and extended families are on the spectrum that we are the normal ones!

Paula's advice is right on... Let me add: Get involved... in any way you can...
AND, Don't listen to the Marketers that say Mum's know it all. Here’s a funny one: Like when I went grocery shopping the other day and bought a breakfast cereal with a slogan: "Kids tested... Mother approved"... Jestingly I got a marking pen and added DAD approves... I'm going to go make some Muesli for them next time!!! (Should have added this to my “Peeve” post)
Yeah, it annoys me when they have those ads that make out it is only mums who look after the kids and I'm a woman!
The main advice I can give is to encourage your girlfriend to breastfeed if at all possible. It is healthy for the baby and saves on having to get up and make bottles. With a first baby, it can take a few days for the milk to come in properly though.

Any advice?
Yes: Get married.
Can you please tell why that is a good choice?
Can you please tell why that is a good choice?
So that the baby will be born to a married couple, and not to "a boyfriend and a girlfriend" (two most silly words).