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

Hi there! I’m a mechanic who dreams of becoming an actor, and this is my website. I live in Bordeaux, have a great dog called Russell, and I like vodka (and getting caught in sudden rain on long walks along the beach at sunset).

…or something like this:

The company 123 Machin Truc was founded in 1971 and has been offering quality thingamajigs to the public ever since. Based in Saint-Remy-en-Bouzemont-Saint-Genest-et-Isson, 123 Machin Truc employs 2,000 people and makes all sorts 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!