🌐 1. Google AdSense (Website / Blog)
Best for: Bloggers, website owners, or news portals

Google shows ads on your site, and you earn money per click or per 1,000 views.
Example: A blog getting 100K monthly views can earn ₹5,000–₹50,000+ depending on niche and country.

Create a website or blog with useful content (e.g., tech, finance, travel, recipes).

Apply for Google AdSense (https://www.google.com/adsense/).