This is an example page. It differs from a blog post because it will remain in the same place and appear in your site's navigation (in most themes). Most people start with an «About» page that introduces them to site visitors. It might look something like this:
Hello! I am a mechanic who aspires to become an actor, and this is my site. I live in Bordeaux, I have a great dog named Russell, and I love vodka (as well as being surprised by sudden rain during long walks on the beach at sunset).
…or something like this:
The company 123 Widget Corp was founded in 1971, and has continuously provided the public with quality widgets ever since. Located in Saint-Remy-en-Bouzemont-Saint-Genest-et-Isson, 123 Widget Corp employs 2,000 people and manufactures all sorts of superb gadgets for the Bouzemont community.
As a new WordPress user, you should go to your dashboard to delete this page and create new pages for your content. Have fun!