This is an example page. It's different from a blog post because it will stay in one place and show up 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 be an actor, and this is my site. I live in Bordeaux, have a great dog named Russell, and I love vodka (as well as being surprised by the sudden rain on long walks on the beach at sunset).

... or something like this:

123 Machin Truc was created in 1971, and has continued to offer the public quality stuff since then. Located in Saint-Remy-en-Bouzemont-Saint-Genest-et-Isson, 123 Machin Truc employs 2 people, and manufactures all kinds of great 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 !