A handbook is a concise reference book that provides essential information or guidelines on a specific topic. It is designed to be portable and easy to use, offering quick access to key facts, instructions, or procedures. Handbooks are often organized into sections or chapters for easy navigation. They can cover a wide range of subjects, including technical fields, business practices, education, or personal development. Typically, handbooks serve as practical tools, offering clear, organized, and useful content to help users understand and apply knowledge in various situations. They are commonly used for training, reference, and problem-solving.