From Zero to Hero documents the author's UX journey and discusses UX research. It describes conducting research to understand problems users faced with using horses for transportation in the 19th century. Through observation, insights were gained that changed humanity by not focusing on faster horses or stronger stamina, but on developing cars instead. The document outlines UX research activities like understanding the project, creating a research plan, conducting studies, analyzing data, and communicating results. It provides examples of research methods and discusses when in the product development process UX research should be performed - for discovery, validation, development, and follow up.