This is a sample page. It is different from a blog post because it will stay in one place and appear in your site navigation (in most themes). Most people start with an About page that introduces them to site visitors. It might look something like this:
Hi! I'm a mechanic and aspiring actor, and this is my website. I live in Bordeaux, have a great dog named Russell, and like vodka (and getting caught in sudden rain during long walks on the beach at sunset).
…or something like this:
123 Machin Truc was founded in 1971 and has been providing quality products to the public ever since. Located in Saint-Remy-en-Bouzemont-Saint-Genest-et-Isson, 123 Machin Truc employs 2,000 people and makes all sorts of great products for the local 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!