Unlike some years ago when web sites were almost exclusively static, the standard today is to have a feature-rich, dynamic site. Few people can build such a website from scratch though, hence the simplest solution to have a dynamic website is to use a script application. Many hosting providers offer script installers which can be used to add this kind of an application for each of your domain or subdomains, so you'll not need to set up anything manually. The benefit of using an installer tool is that the scripts are available to use in a couple of minutes and the copy that will be installed is already with the settings necessary for it to run adequately on the particular hosting web server, so you will not have to modify any script or account settings. This way you can effortlessly create one with simply a few mouse clicks even if you have never had a site before.