This is a sample page. It's different than a blog post because it will stay in one place and appear in your site's navigation (in most themes). Most people start with an “About” page that introduces them to potential site visitors. You could say something like this:

Hello! I'm a bike messenger by day, aspiring actor by night, and this is my website. I live in Los Angeles, I have a great dog named Jack, and I like pina coladas. (And get caught in the rain.)

…or something like this:

The XYZ Trasto company was founded in 1971, and has been providing quality junk to the public since then. Located in Gotham City, XYZ employs over 2,000 people and does all kinds of amazing things for the Gotham community.

As a new WordPress user, you should head over to your desk to delete this page and create new pages for your content. Have fun!