Every product manager builds things for customers, and knowing just who your customers are-what their needs, hopes, desires, frustrations and goals are-is the bedrock of all the work we do. But how do you go about learning that? And how do you know when you've learned enough and can get back to building? Well, does has Erika Hall have the book for you!  Listen in as Sandi MacPherson and I dive into Just Enough Research and discuss how we've used the tools and tactics presented there to help us get the best things to customers. We talked through the Who, What, When, Where, How, and Why of user research.