A handout book is a printed publication that is distributed to a group of people, typically for educational or informational purposes. It usually contains information that is meant to be read and referenced by the recipients, such as key points from a presentation, detailed instructions, or important data. Handout books are often used in seminars, workshops, conferences, and other educational settings to provide participants with additional resources and reference materials. They can be in the form of a physical booklet or a digital document that is shared electronically.