Executive Summary When the client came to me, the channel had zero subscribers, zero published videos, and no brand assets—only a clear voice and the willingness to post consistently. Six months later, the channel crossed 7 000 highly engaged subscribers, 130 000 lifetime views, and a thriving comment community, all while spending exactly USD 600 on advertising. The growth was achieved by treating YouTube not as a single platform but as a three-layer funnel—Discovery → Viewing → Retention → Monetizable Action—and reverse-engineering every asset to serve that funnel.