Unlike some years back when Internet sites were almost exclusively static, the standard currently is to have a feature-rich, dynamic site. Not many people can build this kind of website from scratch though, therefore the simplest solution to have a dynamic website is to use a script application. Lots of hosting service providers offer script installers that can be used to add such an app for any of your domain or subdomains, so you'll not have to install anything manually. The benefit of using an installer tool is the fact that the scripts are available to use in a few minutes and the copy which will be installed is already with the settings necessary for it to run correctly on the particular hosting server, so you'll not have to alter any script or account settings. This way you can quickly build one with just a couple of mouse clicks even if you have never had a website before.