On the portal home page, there is a LEARN MORE link under "Accelerating discovery through software & services." In fact, the whole area seems to be a link.
The page that's linked doesn't seem like a good explanation of the site. The first paragraph is about XSEDE, not the Research Software Portal. The explanation should focused on the portal, and it can refer to XSEDE if necessary.
The rest of the page is just a list of links using the old CSR structure, and doesn't add anything to the explanation. This page should have a longer explanation of what the RSP is for (purpose, goals, intended users) and how each content area supports the goals. If necessary, it could also mention the team working on the RSP and the content provider teams.