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

Hi there! I’m a bike messeneles, have a great dog named Jack, and I like piña coladas. (And gettin’ caught in the rain.)

As a new WordPress user, you should go to your dashboard to delete this page and create new pages for your content. Have fun!