My preferred settings
-General Snapshots
A mode, ~F2.8 in low light to F8 outdoor for best sharpness, tune ISO such that shutter speed not too low.
-Group photos/Potraits
Outdoor, Amode,group ~F4 or higher, to get DOF. portraits, some may like bokeh, then use small F, long focal length >>50mm. again, tune ISO such that shutter speed not too low.
Indoor, M mode, ~F4, ISO400, 1/30 to 1/80, shld be underexposed at times, use flash to illuminate subject
-Landscape
-Amode, F6.3 or smaller. ISO100 for daylight, night maybe 200-400(w tripod)