Earning passive income involves creating assets or systems that generate ongoing revenue with little day-to-day effort. Popular methods include investing in dividend stocks, rental properties, or real estate crowdfunding. Digital opportunities include selling e-books, online courses, or stock photos, and earning through ad revenue on blogs, YouTube, or podcasts. Other options include affiliate marketing, building an app, or licensing creative work like music or designs. While passive income reduces active involvement over time, it usually requires upfront investment of time, money, or skills to establish a sustainable flow.