Here are some links that I think are useful to study for the test.
Georgia GPS World History Standards
http://www.regentsprep.org/Regents/global/global.cfm
This is a link for a graduation test in New York, but has great multiple choice questions and outline notes of everything.
http://testprep.sparknotes.com/
This is a website that you have to register for, but it is free. It has practice tests that will tell you which areas you need to focus on.
http://www.sheppardsoftware.com/Geography.htm
Here is the extra credit map game. You may do Africa, Asia, Caribbean, Europe, Middle East, and Central and South America. You must get 100% correct, <40 miles error, and print out your score sheet for me to see.