"Universal Methods of Design" by Bruce Hanington and Bella Martin is a comprehensive resource that presents 100 essential research methods for designers facing complex challenges. The book spans various disciplines, offering practical guidance on techniques ranging from user research and brainstorming to prototyping and usability testing. Each method is concisely explained with illustrations and real-world examples, making it accessible for designers at all levels. This reference serves as an invaluable toolkit for enhancing creativity, fostering human-centered design thinking, and effectively solving problems across diverse design projects.