Cystic Fibrosis Foundation - The official CFF website is excellent. Information about CF in general, research, CFFCareNet (CFF accredited throughout the USA), how to help CF, education (archives of CFF webcasts), and multiple other useful pieces of information.

50 Years of Research, Progress, and Hope - a brilliant documentary video (approx 60 minutes)

Johns Hopkins Cystic Fibrosis Center - Their section on “What Is CF” is excellent. CF A to Z is a dictionary of almost everything that has something to do with CF.