These will help you get started. Just pick a topic and start reading to familiarize yourselves with the options. Once you've finalized your topic, you also might find out abut other sites by looking at these sites and exploring any links that seem relevant.
Phillis Wheatley
http://www.pbs.org/wgbh/aia/part2/2p12.html
http://www.lkwdpl.org/wihohio/whea-phi.htm
http://www.csustan.edu/english/reuben/pal/chap2/wheatley.html
Benjamin Banneker
http://www.pbs.org/wgbh/aia/part2/2p84.html
http://library.thinkquest.org/3337/banneker.html
http://www.americaslibrary.gov/cgi-bin/page.cgi/jb/colonial/banneker_1
Boston Massacre
http://www.bostonmassacre.net/plot/detailed1.htm
http://www.pbs.org/wgbh/aia/part2/2p25.html
http://www.americaslibrary.gov/cgi-bin/page.cgi/es/ma/massacre_1
http://www.americaslibrary.gov/cgi-bin/page.cgi/jb/revolut/boston_1
Crispus Attucks
http://www.bridgew.edu/HOBA/attucks.htm
http://www.pbs.org/wgbh/aia/part2/2p24.html
http://www.africawithin.com/bios/crispus_attucks.htm
The Declaration of Independence
http://www.americaslibrary.gov:8081/aa/jefferson/aa_jefferson_declar_1.html
http://www.archives.gov/exhibits/charters/declaration_history.html
http://www.ushistory.org/declaration/timeline.htm
The Tea Act and the Boston Tea Party
http://www.bostonteapartyship.com/history.asp
http://www.theamericanrevolution.org/hevents/bteapart.asp
John Locke and The Enlightenment
http://www.wsu.edu:8000/~dee/AMERICA/ENLIGHT.HTM
http://www.wsu.edu:8001/~dee/ENLIGHT/PREPHIL.HTM
http://history-world.org/locke.htm
Privateers
http://www.nps.gov/revwar/about_the_revolution/privateers.html
http://www.usmm.org/revolution.html
Quakers and the Antislavery Movement
http://www.america.gov/st/hr-english/2008/November/20081112170035abretnuh3.838748e-02.html&distid=ucs
http://www.pbs.org/wgbh/aia/part3/3p249.html
Colonel Tye
http://www.pbs.org/wgbh/aia/part2/2p52.html
http://www.pbs.org/wgbh/aia/part2/2i1632.html
http://www.thirteen.org/pressroom/pdf/slavery/SlaveryHour2Profiles.pdf
Salem Poor
http://www.nps.gov/revwar/about_the_revolution/salem_poor.html
http://www.blackpast.org/?q=aah/poor-salem-1747-1780
Elizabeth Freeman
http://www.pbs.org/wgbh/aia/part2/2p39.html
http://www.thirteen.org/pressroom/pdf/slavery/SlaveryHour2Profiles.pdf
http://www.masshist.org/longroad/01slavery/bett.htm