It's really hard to get a sense of how Zulip works without any screenshots or videos anywhere on zulip.org, just general descriptions like "the world's most productive group chat" and "email threading model."
The fastest way to find out how it works is to go to https://chat.zulip.org/accounts/login/ and click "Log in with GitHub". They really need to make that path easier to find.
The fastest way to find out how it works is to go to https://chat.zulip.org/accounts/login/ and click "Log in with GitHub". They really need to make that path easier to find.