Coupons.com often offers coupons on diapers, and hopster.com sometimes has them, too. Go to the websites for Pampers, Huggies, Luvs, etc, and sign up for their emails. You can register and create a profile with the baby's due date and they will send you developmental info and sometimes printable coupons. Register also at Gerber, Enfamil, and Similac's websites and they will send you formula samples closer to the due date, if formula feeding is right for your situation.