Good question. I am so far behind on onboarding screens that I have no idea how to reply.
Discussion
Put a help button on the login screen and in the left hand flyout menu with some explaining. That might be a good place to start.
As for help reply - super controversial suggestion - since you already add us to the Amethyst Users channel in the DM/channels menu - maybe add another column to the home screen for JUST that channel - or a new one called Amethyst Help
The Channels tab by default still going to free relays right?
This is where we tag my my #[3] for some UI help.