One of the key reasons why WordPress is the most popular publishing platform is its capability to be visually stunning. And this can be as simple as changing its theme.
While a new WordPress installation comes with several default themes ie. Twenty Ten, Twenty Eleven … and the latest Twenty Fourteen – all these are very good basic themes but they are simply too common and will not make your site stand out of the crowds.
Hence, the normal practice is to select and decide on a nice theme that you like. The following video tutorial shows you exactly how to upload and change a new WordPress theme :