Art Photo Index (API) is an ever-growing image and information resource focused on art and documentary photography. Artists are selected based on their accomplishments in the field. 

Visiblediversity - A site to address the lack of diversity within the arts curriculum 

Lux online - a great resource for film and video artists and their work.

http://lenscratch.com/ - Great Photography blog 

http://lenscratch.com/resources/ - Photography related resources 

http://lenscratch.com/photographers/genres - New Fine Art photographers - search by genre or why not try by technique. 

Masters of Photography - a superb resource, including articles, photographs and resources on a wide variety of famous photographers. 

Photography from the BBC - A season of programmes looking at Photography.

Photoquotes - a great source of quotations by photographers about photography.

Object: Photo - a fantastic Museum of Modern Art interactive website exploring avant-garde photography from the 1920s and 30s.

Wikipedia Photography pages. A great source of historical and technical information.

Visions & Images - a great series of video interviews with the greats of American photography.

On this date in photography - a wonderful blog from James McArdle featuring fascinating stories about historical events in photography organised by date.

The British Journal of Photography online - the online version of the oldest running photography magazine. Great snippets of contemporary photo culture.

1000 Words magazine - ​a quarterly online magazine dedicated to critical engagement with contemporary photography in the UK and beyond.

https://www.lensculture.com/ European Contemporary Photography

http://zonezero.com/ Mexican Photography with digital slant

ASX - American Suburb X is a wonderful resource packed with critical essays, interviews, reviews of books, exhibitions and photographs.

Conscientious (Extended) - longer articles about fine art photography and extended interviews with its leading practitioners. Thoroughly recommended.

Tate galleries now with their very own photography curator.

The Photographers' Gallery in London has a new home and curates fantastic exhibitions, most of which are free.

The Museum of Modern Art New York, Photography Collection, containing online exhibitions of Cindy Sherman's Untitled Film Stills and work by Andreas Gursky, Manuel Alvarez Bravo and Aleksandr Rodchenko amongst others.

The Hillman Photography Initiative at the Carnegie Museum of Art explores the creation, transmission, consumption, storage, potential loss, and reemergence of photographic images in contemporary culture.

George Eastman House International Museum of Photography and Film. Scroll down to find the alphabetical list of photographers in the collection.

New York Public Library Photography Collection, containing famous work by both Berenice Abbott and Lewis Hine.

The National Museum of Film, Photography and Television in Bradford.

The Victoria and Albert Museum Photography pages. Explore one of the oldest collections of photographs in the world.

The Photographers Gallery London. Check out current, previous and future exhibitions.

The Maison Européenne de la Photographie in Paris.

The International Centre of Photography New York.

The Huis Marseille Foundation for Photography, Amsterdam.

Fotomuseum Winterthur in Zurich - an excellent collection of photographs from Robert Frank to the present day.

The Hasselblad Centre in Sweden. 

Lomographics - the home of the strange and wonderful world of Lomography. Don't think just shoot!

Magnum Photos - home to some of the greatest names in photojournalism.

Josef Chladek's virtual photobook shelf - a wonderful collection of some of the most interesting photobooks ever published.

Vincent Borrelli - rare and contemporary photobooks.

photo-eye - sort images by photographer or genre/subject. Some fascinating work by great names like Eve Arnold and contemporary photographers.

Morehouse gallery -contains some great work plus a collection of Harry Callahans colour photography.

Fraenkel Gallery - San Francisco, one of the most important commercial photography galleries in America.

Peter Fetterman Gallery - an excellent collection of work by famous photographers including Cartier-Bresson, Helen Levitt, Robert Capa and Elliot Erwitt. 

Stephen Daiter Gallery - an great collection of work by a broad range of photographers with good quality scans of their work. 

Michael Hoppen Gallery - Check out Genre Search to see some contemporary photographers 

Photography Talk - plenty of support for the beginner and more advanced photographer.

Marc Levoy - Video Lectures on Digital Photography - An introduction to the scientific, artistic, and computing aspects of digital photography. Very technical but has some interesting insights in to the history of the subject.

Marc Levoy - Lecture Website - Accompanying website to the video lectures

http://www.lightingdiagrams.com/Creator

http://www.zvork.fr/vls/

http://pixlr.com/ - 3 different types of editor,(Editor - Like Photoshop, Express - Like Instagram - Quick Filters). 

First Call Photographic - a great source of equipment for UK schools.

Digital Photography Review - a thorough site for reviews of a wide range of kit.

Peta Pixel - tech and gear related reviews.

JSR Photography Agency London | JSR Agency 

Horton-Stephens - London Photographers Agent