Each time when someone will purchase an application through your link - you will earn 15% from purchase amount (including installation services if was required). For example from $29.99 purchase - you earn $4.50, but from $49.99 - you earn $7.50.
Create new account to get your affiliate id number. When you will sign in - in footer (at bottom) you will see your profile page with earnings stats.
Your first payment is monthly (on 1st day next month), then each one is weekly (each Monday). We pay through PayPal / WebMoney / BTC / QIWI / Yandex.