Some links.

http://academic.reed.edu/humanities/110tech/staging.html

http://www.greektheatre.gr/

http://www.richeast.org/htwm/Greeks/theatre/Theatre.html

http://anarchon.tripod.com/indexGREEKTH.html

http://ancienthistory.about.com/od/greektheater/ss/120109GreekTheater.htm

http://www.staloysius.org/Myrtle/Classics/higher_classical_studies/mod9/Intro_Greek_theatre.htm

http://www.slideshare.net/mharring/greek-theatre

http://www.angelfire.com/ut/latiniii/history.html

Some links I have got.