Unlike some years back when web sites were almost exclusively static, the standard nowadays is to have a feature-rich, dynamic website. Few people can create this type of site from scratch though, so the handiest solution to have a dynamic site is to use a script application. A lot of web hosting companies offer script installers that you can use to add this kind of an application for any of your domain or subdomains, so you'll not have to install anything manually. The benefit of using an installer tool would be that the scripts are available to use within a couple of minutes and the copy that will be set up is already with the settings needed for it to run properly on the particular hosting web server, so you will not have to alter any script or account settings. That way you can effortlessly create one with just a few clicks even though you may have never had a website before.