In 2004, Sal Khan started tutoring his cousin remotely using Yahoo!’s Doodle notepad. Impressed by the reach, he began posting short, concise math videos on YouTube to help more learners.
Early comments revealed common stumbling blocks—fraction conversions, quadratic equations—guiding future content priorities. With minimal investment, Khan mapped out a curriculum based on direct learner feedback.
Sprout highlights how zero-code delivery channels like YouTube can serve as powerful MVP platforms for content-driven products.
