I know there is a method to test your product idea using a landing page that describes your product, and asks for the user to enter his email if he would like to register for the beta. Then there is the thing that you provide links and then you analyze who from total users did what.
What I'm missing is step by step examples. How should I do this? What should this landing page contain? How should it look?
Has someone here actually used this method and can share their experience?