Google's guide for creating Google Accounts.

If you do not currently have a google account you can create one with the advice from the above link.

This can advise you how to create a Google Account using an existing non-Google email address.

In order to sign in to RK9 with a Google Account you must use the Google Account email address associated with the account.
You can verify this address by going to this link.

The email that you see in this Google Account email section is the address we will use for authentication.