Unlike some years ago when web sites were almost exclusively static, the standard currently is to have a feature-rich, dynamic web site. Not many people can build this sort of web site completely from scratch though, hence the most convenient solution to have a dynamic website is to use a script application. Many web hosting providers offer script installers which you can use to add this type of an app for any of your domain name or subdomains, so you will not have to add anything manually. The benefit of using an installer tool is the fact that the scripts are ready to use within a couple of minutes and the copy that'll be installed is already with the settings required for it to run properly on the specific hosting server, so you will not need to change any script or account settings. In this way you can quickly create one with just a couple of clicks even when you have never had an Internet site before.