Unlike some years ago when 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, hence the simplest solution to have a dynamic site is to use a script application. Lots of web hosting companies offer script installers which can be used to add this type of an app for each of your domain name or subdomains, so you will not have to add anything manually. The best thing about using an installer tool would be that the scripts are ready to use in a couple of minutes and the copy that will be set up is already with the settings needed for it to run correctly on the particular hosting server, so you will not need to adjust any script or account settings. In this way you can effortlessly create one with simply a few mouse clicks even when you have never had a site before.