This is an example page. It differs from a blog article because it always remains in the same place and (in many themes) appears in the navigation menu. Many people start with an information page that presents them to visitors to the site. A presentation like:

Hello! I am a cyclist by day, aspiring actor by night and this is my website. I live in Los Angeles, I have a big dog named Jack and I like piña colada. (And catch the rain)

…or something similar:

The XYZ Aggeggi Company was founded in 1971 and since then has been providing the public with top quality gadgets. Located in Fantasilandia, XYZ employs over 2.000 people and makes all sorts of fantastic gadgets for the Fantasilandia community.

As a new WordPress user, you should go to yours Dashboard to delete this page, and create new ones for your content. Have a good time!