1. Read up - Get educated. You don't have to read each and every book from the "What to Expect..." series or peruse the entire La Leche League website. Take some time to check out articles on breastfeeding and taking care of a baby. Ask questions...touch base with other new fathers in your life. They may be your best source of information. The more you know, the more you can help.
2. Provide practical help - Change diapers, bring baby to mom for breastfeeding and burp him afterwards, if mom is pumping - clean the pump and offer to bottle feed with breast milk, occupy older children, and so on. The list of what you can do to help is endless.
3. Bond with Baby - This is a special time for all of you. Hold your baby as much as you can. Studies show that skin to skin contact can benefit Baby's health in many ways and promotes bonding.
4. Take care of Mom - Make sure your partner has everything she needs to make breastfeeding as easy and convenient as possible - food, drink, her phone, whatever makes her comfortable. Advocate for Mom. Be her cheerleader for breastfeeding. Support and encouragement will help her to persevere both mentally and physically.
5. Take care of the house - Your child is definitely your new priority, but do your best to help around the house -- even when you are not asked. It takes a few minutes to throw in a load of laundry or empty the dishwasher. Every little bit helps and is appreciated.