The act of providing amusement. Entertainment can be anything from an interesting book to a new movie to a concert. It can also be a backstabbing social drama. It often hits on the points that our brains were evolved to deeply react to. This makes it very entertaining to people.
A good way to start writing an entertaiment article is to speak to sources that can provide accurate information about the topic you want to write about. Then, write out a loose outline to help make the task seem less daunting. It is best not to libel anyone in entertainment articles, so be careful when making accusations or implications.
If the celebrity you are talking about has published a biography, use this as a source of information. You should also watch the subject of your article on television talk shows and other forms of media to get a feel for his public persona.