Here if you have an account on Zoho one then you can easily use social account like Facebook, Gmail etc. Here you have also follow these given steps that you can follow:
Steps 1: Go to zoho one login
Steps 2: Click on “Sign in” button
Steps 3: Enter your email, phone number, user name
Steps 4: Enter password
Steps 5: Click submit/ sign in.
For more also visit: https://blog.storymirror.com/read/iqzvb0fl/how-do-i-access-zoho-crm