Knowledge! CF is a complicated disease with many different symptoms and paths. I recommend researching and empowering yourself with the knowledge about this disease. I also recommend preparing for your first clinic appointment with your son. Keep a notebook handy to jot down any questions that you have about his care and etc. I also recommend keeping a daily diary of his medications, symptoms, bowel movements, eating habits and so on.
Starting at the CFF website is a great idea, as well as reading and posting here.
Congratulations on your new son and welcome to our community!