Unlike some years ago when Internet sites were almost exclusively static, the standard today is to have a feature-rich, dynamic website. Not everybody can create this sort of site completely from scratch though, hence the simplest solution to have a dynamic site is to use a script app. A lot of hosting companies offer script installers which can be used to add this sort of an app for each of your domain or subdomains, so you'll not have to add anything manually. The advantage of using an installer tool is the fact that the scripts are available to use in a few minutes and the copy that'll be installed is already with the settings required for it to run adequately on the particular hosting web server, so you'll not need to alter any script or account settings. In this way you can effortlessly create one with just a few clicks even if you have never had a website before.