I didn't realize there was an option to create a new profile. I can give that a try. Thanks.
The website just lists the browser extension or private key, but it turns out the help page about "New to nostr?" isn't really a help page, it's a "create a new identity" page.
If "New to Nostr?" was labeled something like "create account", it would be easier for people to navigate, whether or not they are new to nostr.