A few helpful sites for students.

Wikipedia - Look up info on pretty much anything! Cannot be used as a legitimate source for classwork, but is a good place to go to learn more or get a better idea about something.

Citation Machine - This is a  site that will help students learn how to cite properly for papers and reports.

Fun Links 

FIFA - Get the latest news on soccer around the world and the 2010 World Cup coming up in 2010.