Free Information Sites

Free Dictionary: www.freedictionary.com combines English,legal,medical etc..
Or
Free Dictionary: www.yourdictionary.com look up word in English,Spanish,french etc..
Free Encyclopedia: www.wikipedia.org anyone can edit
Or
Free Encyclopedia: www.encyclopedia.com Tons of articles also
Free Explanations: www.etymonline.com Explanations of what are words meant and how they sounded up to 2,00 years ago.