Good sources to get worldwide news and study English:

http://learningenglish.voanews.com/

http://www.npr.org/

Quizzes, tests, exercises and puzzles to help you learn English as a Second Language (ESL)

http://a4esl.org/

There are currently 656 discussion topics to choose from:

http://www.esldiscussions.com/

American English Pronunciation Practice:

http://www.manythings.org/pp/

http://www.learn-english.co.il/