Unlike some years back when sites were almost exclusively static, the standard nowadays is to have a feature-rich, dynamic website. Not many people can create this kind of website completely from scratch though, therefore the handiest solution to have a dynamic site is to use a script application. A lot of website hosting companies offer script installers which can be used to add this kind of an app for any of your domain or subdomains, so you'll not have to set up anything manually. The main advantage of using an installer tool is that the scripts are ready to use in a few minutes and the copy that will be set up is already with the settings needed for it to run efficiently on the specific hosting server, so you'll not need to adjust any script or account settings. In this way you can quickly create one with just a few clicks even when you have never had a site before.