Photography is the process of making photographs by exposing light over a controlled amount of time to a light-sensitive medium, such as a digital sensor or photographic film. This is done through a device known as a camera. Cameras are essentially light-proof boxes that house the light-sensitive material.
In order to properly learn the technical aspects of photography, such as what aperture and shutter speed to use, a single lens reflex (SLR) camera with a fully manual mode of operation is recommended. An entry-level SLR will have all the features needed to build a solid technical foundation.
If one does approach learning photography with a film camera, it is a good idea to spend time learning how to develop the negatives and make prints, which allows the photographer employ further techniques such as push processing and an appreciation of the chemical processes involved in the craft of creating analog photographic images. Digital cameras provide instant feedback, which allows one to learn from their photograph on the spot and perhaps make another attempt.