This is an example page. It's different from an article because it stays in the same place and appears in your site's navigation (on most topics). The normal thing is to start with one page “About me”/”About Us”, that presents the website to visitors. It could be anything like this:

Hello! I deliver during the day, but I study to be an actor at night. This is my website. I live in Lisbon, I have a dog called Belarmino and I like caipirinhas (and watch the grass grow).

… or something like this:

Gambozinos XPTO was founded in 1971 and has, since then, provided the highest quality gambuzinos to its customers. Located in Gotham, Gambozinos XPTO employs more than 2 000 collaborators, and is one of the pillars of the community.

As a new WordPress user, should go to your dashboard to delete this page and create new pages of your own content. Have fun!