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2 resources from Learning Loop we point founders to, and the questions each answers.

📄 Article
✓ Link checked Free Beginner

Why we picked it Before you write a line of code, you can test whether a marketplace has a pulse by matching the first buyers and sellers yourself, over a form, a spreadsheet, and WhatsApp. This lays out the concierge method plainly: personally deliver the service, record every request, and watch whether people come back and pay. It is the cheapest way to learn if there is real demand before you spend months building a platform nobody needed.

Concierge MVP: run your marketplace by hand before you build it

From Learning Loop by Learning Loop ~10 min read

  • Manually match 5 to 10 real users through a form or spreadsheet instead of building software: you are testing demand, not scale.
  • Track willingness to pay, repeat requests, and drop-off points, because those signals tell you if a marketplace is worth building.
  • It differs from Wizard of Oz testing: here users know a human is helping, which is exactly what lets you have the direct conversations that reveal what people actually value.
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Answers Can I validate a marketplace idea before I have supply or demand?
📄 Article
✓ Link checked Free Intermediate

Why we picked it For B2B founders, a signed letter of intent is the cheapest way to turn "this sounds useful" into a costly commitment before you write any code. This piece lays out the LOI as one rung on a commitment ladder (say, LOI, contract, payment) and is honest that an LOI is a signal, not a guarantee. It gives you concrete language and structure rather than just theory.

Product Experiment: Letter of Intent, What it is, How it Works, Examples

From Learning Loop by Learning Loop

  • An LOI asks a prospect to put their name and intent on paper, which costs them more than polite enthusiasm and filters out empty interest.
  • Treat it as one step on a ladder toward an actual paid contract, not proof on its own.
  • In B2B you need fewer but deeper signals: ten companies willing to sign beats a hundred landing-page clicks.
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Answers What's the difference between a customer saying they'll pay and actually pulling out a card, and how do I test the real one early?