Developing, printing, and disseminating textbooks for a distance education institution is a challenging task that requires many talented and experienced experts and a strong technical infrastructure. The most crucial step in designing a textbook is analyzing the target population and the needs of that group, before starting to write the content. Textbooks are effective and efficient means that provide students with sound information, using various visual features (color, shape, chart or photography) in individual learning. Since 1982, in the Anadolu University Distance Education System, textbooks – the core instructional medium – have been developed through a well-designed and precise process in a way that helps students to work on their own. Teams that design and develop textbooks at Anadolu University are composed of experienced content experts, editors, instructional designers, TV editors, art directors, language experts, and measurement and evaluation experts. During the first 20 years, textbooks have been developed following commonly accepted traditional methods and techniques; however, in 1999 the system has been restructured with a new instructional design team. Since then, all the books in both associate and undergraduate degree programs have been revised. Textbooks are designed with advanced educational technologies in such a way that students can learn by themselves, and are in accord with the Internet and TV programs. There are over 281 different books written for the Distance Education courses, which are printed at the University. Each year, approximately 5 million books are sent to students. For preparation of books, 605 academicians as authors and 162 academicians as editors are assigned.