The Presidents
Do you need information on a president's early career? domestic politics? foreign affairs? legacy? If so, look no further than PBS American Experience - The Presidents
http://www.pbs.org/wgbh/amex/presidents/35_kennedy/filmmore/ra_privlife.html
This link will take you directly to John F. Kennedy, but if you scroll down a bit, you will see a blue box on the right-hand side of your screen that allows you to select a different president.
You don't need this information for a project? Well then take a gander and learn something!