This is a sample page. It differs from an article in that it stays in its own place and appears in the navigation of your site (in most themes). Many people make an About page first, which introduces them to visitors to your site. You can write something like this, for example:
Greetings! I work as a bike messenger by day and do amateur theatre in the evenings. These are my very own pages. I live in Pargas and I have a wonderful dog called Jaakko. I like piƱa colada drinks and the sound of the rain on the tin roof.
...or something like that:
Hilavitkuttimet Oy was founded in 1971 and has since then been producing high quality Hilavitkuttimet products for its customers. Hilavitkuttimet Oy employs over 200 people and is based in Salo, Finland, and organises all kinds of events for the enjoyment of the local community.
As a new WordPress user, you should go to your control panel to delete this page and create new pages for your content. Have fun!