Unlike some years back when web sites were almost exclusively static, the standard nowadays is to have a feature-rich, dynamic website. Not many people can build this sort of website completely from scratch though, so the handiest solution to have a dynamic website is to use a script app. A lot of hosting service providers offer script installers you can use to add this type of an app for each of your domain or subdomains, so you'll not have to set up anything manually. The key advantage of using an installer tool would be that the scripts are available to use within a few minutes and the copy which will be installed is already with the settings necessary for it to run correctly on the specific hosting server, so you'll not have to change any script or account settings. In this way you can quickly build one with only a couple of mouse clicks even though you may have never had an Internet site before.