Documentary/ Film makers explore subject matters through the media of film as opposed to being a feature film maker. The film maker is often the creative idea, director and producer of a short documentary or film and requires them to have a diverse set of abilities in filming and production as well as passion and determination to see their idea move from concept to completion. A number of articles are listed here. See also our CGC in Film and TV.
Articles On becoming a film maker
http://www.bfi.org.uk/ offers funding and training to film makers
http://www.creativeskillset.org/film/ more about the industry