This is an example page. It differs from posts in that it always remains in the same place and (in most themes) is displayed in the website navigation. Most start with a legal notice, the privacy policy or an “About us” page to introduce themselves to potential website visitors. It could say, for example:
Hello! During the day I work as a bicycle courier, at night I am an aspiring actor and this is my website. I live in Berlin, have a large dog named Jack, like piña coladas, but less so (without an umbrella) being left standing in the rain.
… or something like this:
XYZ Company was founded in 1971 and has been supplying the public with high-quality products ever since. At its location in a small city, the company employs over 2,000 people and supports the city’s residents in many ways.
As a new WordPress user, you should go to your dashboard to delete this page and create new pages and posts for your website. Have fun!