http://digital-photography-school.com/learning-exposure-in-digital-photography

http://training.sessions.edu/design-tools/photography-exposure-wheel.asp

http://photo.net/learn/pinhole/pinhole

http://www.dpreview.com/learn/?/glossary

http://www.shortcourses.com/guide/

http://epaperpress.com/psphoto/index.html

http://ergocise.com/tc/dpc.html

http://www.irelantis.com/gallery/index.html

http://www.youtube.com/watch?v=yhUA8FjP2v0

http://www.dove.us/#/features/videos/default.aspx[cp-documentid=7049579]/

http://digitalphotography.wordpress.com/2007/08/04/negative-spaces-positive-spaces-in-digital-photography/

http://photodoto.com/im-ready-for-my-closeup-6-methods-for-perfectly-focused-self-portraits/

http://apcentral.collegeboard.com/apc/members/exam/exam_questions/2134.html

http://www.noupe.com/tutorial/53-killer-photoshop-illustrator-effects-and-tutorials.html

http://en.wikipedia.org/wiki/Rephotography

http://guest.portaportal.com/bodonnell

http://guest.portaportal.com/carkane

http://guest.portaportal.com/ecajigas

http://Guest.portaportal.com/tjpalumbo

http://visual-arts-education.suite101.com/article.cfm/creative_arts_develop_problem_solving_skills

http://finearts.esc20.net/art/art_strategies/art_strat_crit.html

http://www.queendom.com/tests/index.htm

http://www.beyondlean.com/images/ProblemSolvingCycle.jpg