Othello

A brief history of Shakespeare's life
http://www.bl.uk/treasures/shakespeare/life.html

The Elizabethan era
http://www.shakespeareinamericancommunities.org/education/elizabethan-age
http://academic.brooklyn.cuny.edu/english/melani/cs6/ren.html

Some help to tackle the play:

http://www.sparknotes.com/shakespeare/othello/

http://nfs.sparknotes.com/othello/page_2.html

http://www.shakespeare-online.com/plots/othellops.html