Unlike some years back when websites were almost exclusively static, the standard today is to have a feature-rich, dynamic website. Not many people can build this kind of site completely from scratch though, so the simplest solution to have a dynamic website is to use a script app. Many hosting service providers offer script installers which you can use to add this kind of an application for each of your domain or subdomains, so you'll not need to install anything manually. The best thing about using an installer tool is the fact that the scripts are available to use in a couple of minutes and the copy that will be set up is already with the settings needed for it to run adequately on the particular hosting server, so you will not need to alter any script or account settings. This way you can effortlessly build one with just a few clicks even when you have never had a website before.