Congratulations!
The most important parenting advice I can give you - And you'll get plenty - Is this:
It's OK, nobody else knew what they were doing either.
You'll screw things up and regret it... But if you love 'em and do your best, you will do just fine, so don't sweat all the million little things that everyone else is going to tell you to worry about.
Next: It's OK if you hate it at first. The first three months is challenging, with very little payoff: There will be a lot less sleep and a lot more poop and noise in your life. But after a while, that baby will see you and smile and from that point forward it's a lot more fun (though still lots of poop and noise).
Also, you've probably heard about "put them down and walk away"... And while I'd heard that, I felt like I'd be a failure if I had to actually do it, until I learned that both my in-laws had to do it with both kids, and they're about the gentlest souls I know. I promise you, there will come a time when you want to throw that baby so hard they go into orbit. Put them down, walk away, take a minute. You're not in the wilderness, the baby will be fine by itself for a bit. Breathe and/or scream until you're ready to start again.
Finally - The days are long, the years are short. It's hard to cherish the cuteness of small kids while they're still small, and it doesn't last long. Take a break from diaper changing and feeding now and then to just pause and appreciate who they are each day. It's a fascinating journey.
And don't forget to corrupt them every chance you get... My guys LOVE going to the airport or the EAA museum whenever mama needs a break:
