This is an example page. It's different from a blog post because it will stay in one place and will appear in your site's navigation under most themes. Many people start with a page that introduces them to potential site visitors. It might say something like this:
Hello! I am a bicycle messenger by day, aspiring actor by night, and this is my website. I live in São Paulo, have a big dog named Rex, and enjoy drinking caipirinhas (and taking rain showers).
…or something like that:
XYZ Miniatures Company was founded in 1971, and since then has been providing quality miniatures to the public. Located in the city of Itu, XYZ employs over 2,000 people and does great things for the city's community.
As a new WordPress user, you should go to the dashboard to delete this page and create new pages for your content. Have fun!