The most common method to teach photographic composition to novices is the "rule of thirds" — in short, divide the screen into equal thirds vertically and horizontally, and then place your point of interest on any of the cross points for a maximally pleasing image.
The Sunny 16 Rule is one of the simplest rules in photography that helps you gain correct exposure. It’s a formula that will tell you what shutter speed to use on a bright sunny day when the lens’s aperture is set to f/16.
Camera resolution in the early 2000s was a space race to the biggest and best. Nikon ushered in the beginning of the end -- with the release of the 36-megapixel era-defining D800 -- to what became the resolution doldrums.