Sites designed for language learners

BBC WS – Learning English http://www.bbc.co.uk/worldservice/learningenglish
Exercises for English http://a4esl.org/
Picture dictionary and pronunciation http://www.languageguide.org/english/
Song lyrics http://www.lyricstraining.com/

Listening exercises

ESL Listening lab www.esl-lab.com 

Dictionaries and Language Reference

Oxford Advanced Learner's Dictionary http://oald8.oxfordlearnersdictionaries.com/dictionary
Monolingual dictionary http://www.wordreference.com/
Pronunciation http://www.howjsay.com

Reference

Biography http://www.biography.com
Encyclopaedia Britannica http://www.britannica.com
Wikipedia http://en.wikipedia.org/wiki/Main_Page

Literature

Shakespeare http://www.shakespeare-online.com/
Luminarium http://www.luminarium.org/ 

News Media

BBC News http://www.bbc.co.uk/
CNN http://www.cnn.com/
New York Times http://www.nytimes.com
The Guardian http://www.guardian.co.uk/
The Times http://www.the-times.co.uk/
Swiss news in English http://www.swissinfo.ch/
Wall Street Journal http://www.wsj.com/