Unlike some years ago when sites were almost exclusively static, the standard today is to have a feature-rich, dynamic site. Not everybody can create this sort of website from scratch though, so the handiest solution to have a dynamic website is to use a script application. A lot of website 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 add anything manually. The benefit of using an installer tool is the fact that the scripts are ready to use within a few minutes and the copy that'll be set up is already with the settings necessary for it to run adequately on the particular hosting web server, so you will not have to adjust any script or account settings. That way you can effortlessly create one with just a few mouse clicks even if you have never had a website before.