Put a link back to the main blog page on a single post page?

Here’s my sandbox page where we are looking at using UABB Advanced Posts module. https://newsite.earthyp.com/pricing-page-not-public/

Here’s a sing post page: https://newsite.earthyp.com/post-6/

At least the main navigation is still there on the single posts page. I’d like to see if there is any way we can link back to the blog page from a single posts page.

Am I correct that the ability to make changes in a single post page requires Theamer?