I’ve not used the Aimko before and I being asked for a numeric password, which, I don’t know. So, how do I gain access to the home screen, to be able to setup or access the internet?
Was this a pre-owned device? That would explain the unknown unlock PIN. If so, you'll probably need the previous owner's help in resetting the device as they probably never removed their accounts either, and that would need to be done in order to set it up for yourself.
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Welcome to Android Central! I agree with hallux. You can't bypass this, since it's a security measure (and we don't entertain any discussions about that on this forum).