If your blog is published to a dynamic template, neither you or your readers will have a navbar, when your blog is being viewed. The navbar, found on blogs which use a non dynamic template - when selected by the blog owner - has a number of reader friendly icons and links. Dynamic templates have a "menu bar" 1/5 of the way down the page - which provides a combination of the Pages gadget, and limited navbar functions. At the far right end of the menu bar, you'll see 2 tiny icons - when you are properly logged in as the blog owner. New post, the "pencil" icon. Home, the "home" icon.
What Blogger won't tell you