You can use these websites to work on your listening skills but also on your general English (vocabulary and expression as well) :
– BBC Learning English : http://www.bbc.co.uk/worldservice/learningenglish/ – To listen to easy extracts from the news, with vocabulary exercises.
In particular, 6-minute English : http://www.bbc.co.uk/worldservice/learningenglish/general/sixminute/index.shtml – with easier audio files and vocabulary explanations.
– Breaking News English : http://www.breakingnewsenglish.com/ – Audio files on recent news, with lots of comprehension and vocabulary exercises. Excellent practice.
– Randall’s Listening Lab : http://www.esl-lab.com/ – Audio files with full correction and quizzes. You can choose the level of the files you are working on.