The National Air & Space Museum's Apollo Site - easy to navigate site with a lot of information about the Apollo Program
SpaceLog - a comprehensive account of Apollo 13 with pictures, transcripts and a great map of events (under Phases)
The Lunar and Plaentary Institute's Apollo Site - information about the science objectives for each mission, pictures, experiments, landing sites, etc
Apollo Lunar Surface Journal - a collection of photos, videos, reports, 1st hand reports and other things from Nasa's archive
Apollo - Kennedy Space Center - site filed with information about each flight
Panorama Views of Apollo - Ever wonder what it looked like on the moon? 360 panorama views of the missions on the moon with audio.
2012 picture of the Apollo 11 landing site - Article from Space.com about the picture taken by the Lunar Reconnaissance Orbiter (LRO), a satellite that is orbiting the moon.
Apollo - The Apollo site from Nasa's archive on manned missions
The Apollo Program - From Nasa's History Division - collection of links all about Apollo.
Kennedy's speech to Congress May 25, 1961 Kennedy's speech at Rice University Sept 12, 1962
Apollo 11 - First Steps on the Moon - Video and audio clips of historic moments in Apollo history, not just Apollo 11
Apollo Expeditions to the Moon - online book that goes through events leading up to Apollo and the lunar landings