Unlike some years back when sites were almost exclusively static, the standard these days is to have a feature-rich, dynamic website. Not many people can build this sort of website completely from scratch though, therefore the most convenient solution to have a dynamic site is to use a script app. Lots of website hosting service providers offer script installers which you can use to add this type of an application for each of your domain name or subdomains, so you'll not have to install anything manually. The main advantage of using an installer tool is that the scripts are available to use in just a few minutes and the copy that will be installed is already with the settings necessary for it to run efficiently on the particular hosting server, so you will not need to alter any script or account settings. That way you can easily create one with only a few clicks even when you have never had an Internet site before.