Found this really popular video on YouTube 'Twitter in plain English'. It is simple and plain just like Twitter and easy to follow. There are a huge number of people joining Twitter everyday and wondering how to get started. I think this video is useful and gives a few hints for freshers and newbies. Of course it does not get too deep into various ways Twitter power users use he service. But it is good if your wondering how and where to start. For those who know all this the video still makes an interesting listen. Highly recommended.