If you’re wondering what org-roam is all about, there are a couple of useful videos over at the YouTube Emacs Elements channel. The first video explains what org-roam is and how it works. It works through a couple of examples that show how to insert links and how to reveal back links. One nice aspect of the video is that it shows how to use the org-roam capture templates to enter notes. That’s more important than it might seem because for a working Zettelkasten it’s vital that entering notes be as frictionless as possible so that you won’t hesitate to capture all your ideas and notes.
The second, shorter, video discusses some tweaks that make dealing with org-roam files a bit easier. It also shows some more examples of using templates.
These videos are a nice introduction to how one might use org-roam. You probably won’t want to use the bindings from the videos—they mostly use the Ctrl+h prefix—but that’s just a detail. The videos are 14 minutes, 16 seconds and 7 minutes, 4 seconds long so they shouldn’t be too hard to fit in. If you’re looking for an Emacs-based Zettelkasten solution, you should take a look at these videos.