Im not photographer, but i learned the basics of photography searching on the internet and experimenting with a reflex camera experimenting shutter speeed, lens aperture, f number, ISO speed, and how these variables affects how the final photograph. The same goes with illumination, learning little by little over the years. BUT i dont recall all of this by memory, so what i do when i want to refresh my mind and search for a starting point in camera/illumination settings, i navigate Flickr looking for a photo that inspires me and also has a similar scene lightning condition that im planning to achieve, and look for the f number, shutter speed and ISO speed of the photo posted there. Take this random pic for example:
