The term composition refers to the content of a photograph; specifically, the way everything in the photo is laid out. This presentation you can download, explains and simplifies this concept.
This presentation summarises the main points when using graduated Neutral Density filters.
Cameras generally save pictures as jpeg files by default. Many let you save as jpegs, raw files or both. This presentation explains how they work.
The Exposure Triangle refers to the relationship between aperture, shutter speed, and ISO, all of which control how much light is allowed to reach the camera's sensor. These three settings work together to determine the final exposure of an image and are explained in depth in the following presentation.
This presentation by Philip Chisom looks at various techniques for lighting when using models in portraiture photography.
