Online Encyclopedias of Philosophy

• Perseus Project - A Digital Library of resources in humanities (University of Chicago mirror)
• Loeb Classics Library Online - This series from Harvard University Press is now available free online. These texts have original languages and translations of many classics.
• Internet Encyclopedia of Philosophy - This excellent resource run though the Philosophy Department of University of Tennessee, Martin, was founded and is edited by James Fieser.
• Stanford Encyclopedia of Philosophy - Another excellent resource, run by the Philosophy Department of Stanford University.
• Rutledge Encyclopedia of Philosophy - Another, newer, online resource.

Free Audio/Texts Online (philosophical and otherwise)

• Project Gutenberg - One of the first online libraries.
• Individual Essays - a list maintained by David Chalmers. This is a fairly extensive list.
• Philosophy PodCasts - A listing of various podcasts by philosophers.
• Philosophy Now - An online magazine
• Philosophy Research Index - A bibliographic database of books, articles, etc.

Other Resources

• Are some methods of note-taking better than others? Should you use your notebook or tablet, or hand write your notes? A Recent Study provides a response.
• Graphing a history of philosophy - The graph on this site is not a tracing of influences, but a graph based upon Wikipedia pages. Interesting nonetheless...
• Monty Python's Philosopher's Song -  This version is from  Monty Python at the Hollywood Bowl. Also, the lyrics to the Philosopher's Song.
• The Philosopher's Lexicon - For a bit more humor of the philosophical variety.
• The Fallacy Files - A very nice site devoted to logical fallacies.