Gen Key command done correctly

[Robert D.]

I tried to generate a key using commands in "Terminal" on my OS/X.  This
is actually a learning experience for me done on purpose.

When I used gen-key, I got one, but at the end was told that I'd need to
generate a  sub-key that I could use to actually encrypt.
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So,, what I am asking in where I went wrong?

I used the gpg --gen-key to generate a non-expiring 4096 RSA key; gave a
name and email address.

What would be the complete process done via the CLI ??

thanks