This is a sample page. It differs from posts as it always remains in the same location and (with most themes) is displayed in the website navigation. Most start with an imprint, a privacy policy, or an “About Us” page to introduce themselves to potential website visitors. For example, it could say:

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, enjoy Piña Coladas, but I am not fond of being left standing in the rain (without an umbrella).

… or something like this:

Company XYZ was founded in 1971 and has been providing the public with high-quality products ever since. At its location in a mid-sized city, the company employs over 2,000 people and supports the city’s residents in many ways.

As a new WordPress user, you should access your Dashboard to delete this page and create new pages and posts for your website. Enjoy!