Qwerty you can download XAMPP here which will allow you to develop a site on your computer. This will install a "server" on your computer so you can work with PHP files and MySQL databases which is the most common arrangement on public servers.
https://www.apachefriends.org/index.html
From there you can install Drupal, Wordpress etc. Adding or editing content is really simple, both offer an easy to use frontend and various tools to help theme a site etc. . With a little bit reading you can develop something presentable and usable.
The one important thing you need to do is keep it up to date.