I think the imortant difference to email here is that communication is open to everyone, not person to person. This creates the need for moderation and selection.

You install an RSS reader app on your phone or computer and subscribe to the feed links. Those contain some metadata for each story and a link to the content. The RSS reader will display everything in a readable way.

At least the first one even has a co-op multiplayer mode. I wish there were more metroidvanias doing that.

I have just started to look into BookWyrm because of this post. Is there a way to tag or categorized books? I like to separate them by genre or other aspects.

I'm also new to this whole Fediverse thing. What I managed to do is:

1. Create an account on a Mastodon server
2. Create an account on BookWyrm
3. Find the BookWyrm account through the Fedilab app, being logged in with the Mastodon account, and follow (searching for username@bookwyrm.social)
4. See posts I made on BookWyrm after I followed in the Fedilab app

I have not found a way to search for users Jerboa which I use for Lemmy. And searching through the website, I don't find my BookWyrm account. I guess it is still early days for some of this stuff in terms of how easy it is to understand and use.