The following are FAA publications, and others, available for download, free of charge.
faa-h-8083-25 - Pilot's Handbook of Aeronautical Knowledge (Chapters 1-5) faa-h-8083-25 - Pilot's Handbook of Aeronautical Knowledge (Chapters 6-9) faa-h-8083-25 - Pilot's Handbook of Aeronautical Knowledge (Chapters 10-12) faa-h-8083-25 - Pilot's Handbook of Aeronautical Knowledge (Chapters 13-16)
faa-h-8083-9 - Aviation Instructor's Handbook
