Here are a pile of other websites with fun things to do to improve your English!
Firstly this one :http://www.onestopenglish.com/skills/pronunciation/phonemic-chart-and-app/interactive-phonemic-chart/ It’s a version of the phonetic chart, when you click on the sympbols you can hear the sound they represent.
There are loads of fun activties and articles on the British council page: http://learnenglishteens.britishcouncil.org/
You probably already know about this one: http://www.anglaisfacile.com/ – it has lots of exercises to help you revise!
Or why not try listening to the news when you have a free moment? http://newsineasyenglish.com/