Some/Most of this has been said, but repetition is great.
Mine is 2.5
1. Try to do at least one feeding a day. It's great bonding time for you and your baby, and will give your wife a break. Either pumping or formula work for this.
2. If you can get your baby used to both formula and breastmilk, it gives you both a lot more freedom earlier on.
3. Date Nights are still important. Make time in your relationships apart from your child.
4. After the first few months, the biggest thing for your baby is routine. There are a million books for every possibility of feeding/sleeping/pooping/behavior/whatever. The biggest thing is really just to keep consistency in what you're doing with them.
5. Babies are tougher than you think, and the usual answer to "is this normal" is yes. Do not hesitate to call health link though.
6. Every baby is different. Just remind yourself that whenever someone is telling you about how their wonderful/awful child is doing.
7.
Lucies List is a good site to figure out what's good and what you need. You need way less than you think to start, and most things can be bought used for way less. (Except car seats, don't buy those used)