To join the webring file an issue on the repository. Once you are a member you can add the webring links to your site with the following code:
<a href="https://webring.casuallyblue.dev/redirect?from=YOUR_SITE_URL&direction=prev">Previous</a>
<a href="https://webring.casuallyblue.dev">Webring</a>
<a href="https://webring.casuallyblue.dev/redirect?from=YOUR_SITE_URL&direction=next">Next</a>
it will look something like:
Previous | Webring | Next