A good resource to improve your pronunciation (and listening ability)

Choose a word, write it in the search box, and you will be linked to a video in which your chosen word is pronounced: there are subtitles running under the video screen on your page: a fantastic source, I wish I could have had something like that!! 

The good thing about this free source is that you not only listen to the single word, but you can hear it in a context, in the rhythm of a sentence, and that will help you the next time you will hear it again.