This is an example page. It differs from a blog post because it always stays in the same place and (in many topics) appears in the navigation menu. Many people start with an About page that they present to site visitors. A presentation like this may appear:

HI! I'm a bike delivery boy by day, aspiring actor by night and this is my website. I live in Los Angeles, have a large dog named Jack, and I love piña coladas. (And catch the rain)

…or something similar:

The XYZ Gadgets Company was founded in 1971 and has been providing the public with premium quality gadgets ever since. Located in Fantasy Island, XYZ employs over 2,000 people and makes all sorts of cool gadgets for the Fantasy Island community.

As a new WordPress user, you should go to your Bulletin board to delete this page, and create new ones for your content. Have fun!