camera modes

6. What is the difference between the Auto Mode and the Program mode?
auto:the camera will completely control flash and exposure. On most cameras this is labelled "auto", on others simply "A". Some cameras only have (P)program.program: utomatic-assist, just point and shoot. Unlike full auto mode, you can usually control flash and a few other camera settings.
7. What is the Portrait mode used for? How does it work?
To attempt to blur out the background, camera will try to use the fastest available lens setting (aperture).
8. What is the Sports mode used for? (not just sports) How does it work?
To freeze motion, camera will use the highest shutter speed possible.