"The Mom Test, How to Talk to Customers & learn if your business is a good idea when everybody is lying to you" by Rob Fitzpatrick is a book with the aim of improving your customer conversations and getting real learnings out of them! The idea behind the title is that you shouldn't ask your mum if your idea is a good idea because she will lie to you. Like you will learn in this book most people will lie to you, not even with evil intent. Unfortunately, this will not help you with validating your idea.
The book tries to teach you how to get out of these lies and start a conversation where you actually learn something. The main takeaway is to validate the problem and not the idea. Start conversations that focus purely on the customer's life and the problem.
This is a summary of the book with some quotes and the most important learnings I could gain from it. I list the table of contents and go through each chapter. If you want to learn more about it give the book a deep dive.