Unlike some years ago when web sites were almost exclusively static, the standard nowadays is to have a feature-rich, dynamic website. Not everybody can build this type of website completely from scratch though, so the simplest solution to have a dynamic website is to use a script application. Many website hosting service providers offer script installers which you can use to add this kind of an application for any of your domain or subdomains, so you will not need to set up anything manually. The best thing about using an installer tool is the fact that the scripts are available to use within a few minutes and the copy that'll be set up is already with the settings required for it to run properly on the particular hosting web server, so you will not need to modify any script or account settings. This way you can easily build one with simply a few mouse clicks even when you have never had a site before.