Enable Referral Promotions

Hey

I am trying to enable a referral programme similar to Morning Brew for my newsletter at Decentralised.co. My goal is to create a structure where I pay the top subscriber each week in cryptocurrency (say ~0.1 ETH). I was wondering if someone had experience setting something similar? I know how to handle the crypto aspect -more confused around how do I set up the referrer programme through FirstPromoter. Anybody here has experience with it?

Happy to pay for an hour of consulting.

Thanks