Unlike some years back when websites were almost exclusively static, the standard currently is to have a feature-rich, dynamic site. Not everybody can create such a site from scratch though, therefore the simplest solution to have a dynamic website is to use a script app. A lot of web hosting companies offer script installers you can use to add this sort of an application for each of your domain or subdomains, so you'll not have to add anything manually. The best thing about using an installer tool is that the scripts are available to use in just a few minutes and the copy which will be installed is already with the settings required for it to run properly on the particular hosting web server, so you will not have to modify any script or account settings. This way you can quickly create one with simply a couple of clicks even if you have never had a website before.