A great reference for any and all relevant Podcasting 2.0 tags is available on the Project's Github:

https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/1.0.md

Everything is built in the open and explained with relevant examples. If you would like a music-centered version of that, I have made a sample music RSS template here that has comments explaining how each tag is used and what values you need for them:

https://github.com/de-mu/demu-feed-template/blob/master/feed-with-comments.xml

Always happy to answer any questions you might run into or help troubleshoot! I think my favorite aspect of the RSS approach is that you don't really need a lot of coding background to sit down and familiarize yourself with the tags. It's a very accessible spec to build some sort of "my first coding project" in!