This is a sample page. It's different from a blog post because it will stay in one place and will show up in your site's navigation (in most themes). Most people start with an «About» page that introduces them to potential site visitors. It might look something like this:

Hello! I'm a mechanic who aspires to be an actor, and this is my website. I live in Bordeaux, I have a super dog named Russell, and I like vodka (as well as being surprised by sudden rain during long walks on the beach at sunset).

...or something like that:

The company 123 Machin Truc was established in 1971, and has continuously offered quality contraptions to the public ever since. Located in Saint-Remy-en-Bouzemont-Saint-Genest-et-Isson, 123 Machin Truc employs 2,000 people, and manufactures all sorts of superb whatsits for the bouzemontois 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!