A Webring is a collection of sites with homogeneous interests or topic areas. In the very unclear Internet the Webring offers a possibility for purposeful navigation within this sites.
Instead use of search engines you use controlled navigation within the ring.
You can visit Akkordeon Webrings Listpage to find out.
For membership you need to submit your site to the Webring System.
After submission you need to install a Nav-Code at your site (You can see the Navigator at the bottom of this site). Next time the Ringmaster checks your site and finds the Nav-Code installed correctly, the site will be added to the ring.
Submit your site here.
Webring has extra pages with their privacy statements.
At Webring's Helppages.