This page is useful mainly when you access this site on a device with a small screen. Because it has little content, it is easy to scroll to the bottom of the page. On small screens, this is where you will find links to specific posts that I recommend on various topics. On larger screens, these are grouped in a sidebar.
These links go to a page with all blog posts with the specified tag, plus a final link that opens a collection of external webpages and other material that I save for my own reference. They open a new browser tab/window.