Look it Up Online: Beyond Wikipedia

"Lose Your Wikipedia Crutch: 100 Places to Go for Good Answers Online"
Distance Degrees.com

"While Wikipedia isn’t likely to lose its status as the first place people look for quick answers anytime soon, there are loads of other sites out there that can provide you with information, some of which may even be better and more accurate. Whether you’re researching for a paper or just settling a bet with a friend, here are 100 places you can find all the answers you need quickly and easily online...."

Categories:

• General
• Library and Reference
• (From Oxford Journals to Internet Public Library)
• User Contributed
• Encyclopedias
• Science and Math
• Social Studies
• Fine Art
• Language and Literature
• Technology
• Question and Answer
• Miscellaneous
  (This category includes Acronym Finder and Snopes)

Some reference sites I use are here, but not one that is among my favorites: Project Gutenberg, "the first and largest single collection of free electronic books, or eBooks."

Still, it's a good list of resources.