I was able to create a link from a specific blog post to the users main page by doing the following:
Right clicking on the permalink at the bottom of the blog post and choosing "Copy Location"
Going to the user page and opening the external link icon (globe with a chain)
Pasting in the permalink in the link field and giving it a name.
The link showed up on the page, and worked to redirect me to the blog post.
I'm sure everyone already knows how to do this - but I'm including it here for other non-tech, non-programer types who might not know how to figure this out.