This is a sample page. It differs from a blog article in that it stays in one place and appears in the site navigation menu (this is in most themes). Many people start with an About page that introduces them to potential site visitors. Such a page might contain text such as:

Hello! I am a pony express by day, an aspiring actor by night, and this is my blog. I live in Los Angeles, I have a great dog named Jack, and I like piña coladas. (And get soaked in the rain).

…or things like that:

The XYZ Doohickey Company was founded in 1971, and has been providing quality doohickeys to the public ever since. Located in Gotham City, XYZ employs over 2,000 people and produces all kinds of impressive things for the Gotham community.

As a new WordPress user you can go to your bulletin board to delete this page and create new pages for your content. Have fun!