Welcome! You’ll do great here. There’s a lot of folks who have come here recently.
As far as stable or rolling, this is based on arch so the only option is rolling. If arch updates, so do we.
Although one of our members has gone and setup a “stable” workaround for us. Maybe @jonathon can link to it and explain it a bit more since I don’t really understand how that works too be honest. It does require some leg work to get going, but it could be the stability you’re looking for.