The VOA supplies a very useful resource for those who wish to improve their skill in listening to American English.
Here you will find the audio and scripts of a number of interesting radio programs, which focus on both current affairs and American culture/history. The programs are all available for download so that you can listen to them at any time.
The 'special' thing about these programs is that they are read at a slow speed, which is ideal for beginners who are not yet accustomed to hearing normal English.
You will also be able to learn new words and their origins, play games as well as access other useful information on the English language.