This is a sample page. It is different from a post because it remains fixed in one place and will show up in your site navigation (on most topics). Most people start with an About page, presenting them to potential site visitors. It could be something like this:

Hi! I am a messenger for the day, aspiring actor by night, and this is my blog. I live in madrid, I have a great dog named Duque and I like piña coladas (and get caught in a downpour)

…or something like that:

XYZ Company was founded in 1971 and has been offering “things” quality to the public since then. Located in Madrid, XYZ employs more than 2.000 people and does all kinds of amazing things for the community of Madrid.

If you are new to WordPress you should go to your desk to delete this page and create new pages with your own content. Have a good time!