Validate the topic
Confirm there is a real, paying audience.
Act as an online course strategist. My topic is [Course topic] for [Who it is for], delivering this transformation: [The transformation you deliver]. Pressure-test it: who exactly is this for, what specific result do they get, why would they pay rather than Google it for free, and 3 ways I could validate demand before building.
Pro tip: Sell the outcome, not the topic — "run your business from one dashboard" beats "a Notion course".