This is a sample page. It's different from a blog post because it will stay in one place and appear in your site's navigation (in most themes). Most people start with an "About" page that introduces them to potential site visitors. You could say something like this:
Welcome! I'm a waiter by day, aspiring actor by night and this is my website. I live in Mairena del Alcor, I have a dog called Firulais and I like the little box. (And the long afternoons with coffee).
…or something like that:
The company "Mariscos Recio" was founded by Antonio Recio Mata. It started as a small company that supplied seafood to hotels and restaurants, but little by little it has become a great empire. Seafood Recio, the sea at the best price.
As a new WordPress user, you should go to your desk to delete this page and create new pages for your content. Have fun!