To add an ‘About’ page
You may want to tell the reader a little more about yourself. If so, to add an About page (or any other kind of page, actually), go to the naigation on the left side of the Dashboard page. You’ll see Posts, then Media, then Links — then Pages. Click that and you will be given an option “Add New” (also Edit).
You can name the page that opens — just About, or About the Blogger, or About (Your Name), etc.
Then a page with that name should show up on the homepage, separate from your blog posts; as a kind of navigation.