[mothered]

Windows 95 should be one of the earliest versions of the OS, right?

Actually, Windows 3.1 was prior to Windows 95.

I've still got a copy of Windows 3.1 as a bootable ISO file that's "8.5 MB" In capacity.

How did people learn about God Mode back then?

It was 27 years ago, so to be honest, I don't remember how many people were aware of It.