You don't have to guess what people want to buy. In fact, guessing is the easiest way to waste your time. People are already online everyday asking for help with their problems. You just have to know where to look.
Here is a 3-step method to find real questions people are asking right now using free public forums like Reddit or Quora:
Find the Hub: Search for a topic you know about (like "budgeting" or "backyard gardening") and find a community dedicated to it.
Filter by Frustration: Type words like "How do I," "I'm stuck," "frustrated," or "What is the best way to" into the community search bar.
Look for the Patterns: Find questions that have dozens of comments or upvotes.
If twenty people are participating in a thread asking how to fix a specific problem, that is proof of demand. You don’t need to do guesswork. Write down the top three patterns you find—those are your next three highly-valuable blog topics or product ideas.
Next Step: Click the yellow button on this page.