WordPress is an easy Content Management System that is nowadays used for more full business websites. The interface is intuitive and easy to get accustomed to and adding new pages, blog posts, images, etc. can be done quickly.
WordPress can be accessed through any browser so you can manage your site wherever you have a internet.
You can make simple edits and changes to your site whenver you want. You no longer have to wait for a web designer or web developer to make the change for you. However, more complex changes may require more technical skill.