With the new GokuMarket Referral Program everyone can be a part of the program from the moment one successfully registers in GokuMarket.
The Ranks start with G0 and users can attain/upgrade till G10. G0 is automatically achieved upon successful registration and G1 is upgraded by successfully verifying your account (KYC approval).
Ranks can be achieved by performing various tasks and activities like purchasing Starter Kits, trading, buying or selling products and services, etc.
For more details please refer to the article How to achieve or upgrade Ranks?
To learn more about the GokuMarket Referral Program please view this slide presentation.