You can earn affiliate commission without selling anything. Many programs pay for referrals or leads. You must choose programs that reward sign-ups or free trials. You can promote services that do not require purchases. You need to focus on building trust with your audience. You should share honest reviews or helpful tips. Some companies pay when users sign up for newsletters. Others pay when users register for free services. You can share your affiliate link on forums or blogs. You should target people interested in free offers. Consistent effort helps you grow your affiliate earnings. Success comes with patience.