A "practical book" could refer to various types of publications, each serving a distinct purpose and audience. Here are a few interpretations of what a practical book might entail:

How-to Guides: Practical books often provide step-by-step instructions, advice, and tips on how to accomplish specific tasks or achieve particular goals. These can range from practical skills like cooking, gardening, or home repair to personal development topics such as time management, communication skills, or financial planning.

Reference Books: Reference books offer practical information on specific subjects, serving as reliable sources of knowledge and guidance. Examples include dictionaries, encyclopedias, atlases, and manuals that provide factual information, definitions, or instructions.

Self-Help Books: Practical self-help books offer strategies, techniques, and insights for improving various aspects of one's life, such as relationships, health, career, or happiness. These books often combine practical advice with psychological insights and exercises to help readers achieve personal growth and fulfillment.

Professional Development Books: Practical books geared towards professional development provide insights, best practices, and strategies for advancing one's career, mastering specific skills, or excelling in a particular field. They may focus on leadership, management, entrepreneurship, or industry-specific knowledge.

Educational Textbooks: Educational textbooks serve as practical resources for students and educators, providing structured lessons, exercises, and assessments to facilitate learning and comprehension in academic subjects such as mathematics, science, history, literature, or languages.

Cookbooks and Recipe Books: Cookbooks and recipe books offer practical guidance for preparing meals, snacks, and beverages. They provide recipes, cooking techniques, ingredient lists, and serving suggestions to help readers create delicious dishes at home.

Travel Guides: Travel guides are practical books that provide information and recommendations for travelers exploring specific destinations. They typically include details on attractions, accommodations, dining options, transportation, and cultural insights to help travelers plan and enjoy their trips.

DIY and Craft Books: DIY (do-it-yourself) and craft books offer practical instructions and inspiration for creative projects, hobbies, and handmade creations. They may cover a wide range of topics, including crafting, woodworking, sewing, knitting, painting, or home décor.

Overall, a practical book is one that offers useful information, guidance, or inspiration to help readers accomplish tasks, solve problems, or achieve goals in various aspects of their lives. Depending on the context and audience, practical books can cover a diverse range of topics and serve different purposes.