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:
Our school is great. Our pupils are amazing and our teachers are brilliant. Everyone loves our school.
…or something like this:
New Inn is a great place to live. We have a great community and we all love our school.
As a new WordPress user, you should go to your dashboard to delete this page and create new pages for your content. Have fun!