Unlike some years back when websites were almost exclusively static, the standard nowadays is to have a feature-rich, dynamic web site. Few people can create such a site completely from scratch though, so the simplest solution to have a dynamic site is to use a script application. A lot of website hosting companies offer script installers that can be used to add this sort of an app for any of your domain or subdomains, so you will not need to install anything manually. The benefit of using an installer tool is the fact that the scripts are available to use within a few minutes and the copy which will be set up is already with the settings required for it to run properly on the particular hosting server, so you will not need to change any script or account settings. In this way you can easily build one with just a couple of clicks even though you may have never had a site before.