Unlike some years back when Internet sites were almost exclusively static, the standard currently is to have a feature-rich, dynamic site. Not many people can create such a site from scratch though, so the simplest solution to have a dynamic website is to use a script app. A lot of web hosting companies offer script installers which can be used to add this type of an app for each of your domain or subdomains, so you will not have to install 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 set up is already with the settings needed for it to run efficiently on the particular hosting web server, so you'll not have to change any script or account settings. In this way you can easily create one with just a couple of mouse clicks even when you have never had an Internet site before.