Reading and understanding non-fiction texts is essential! The reading skills of students have been the subject of extensive research in recent years. As a result of these studies, there have been and continue to be intensive efforts to improve students' reading competence. Initial successes are becoming visible. Particularly, the handling of non-fiction texts, which children, adolescents, and adults encounter constantly, needs to be practiced. Only those who can confidently navigate non-fiction texts can adequately perceive their interests, broaden their horizons, and better tackle the tasks at hand. The volume "Reading and Understanding Non-Fiction Texts" clarifies the theoretical foundations of reading and understanding, especially non-fiction texts, incorporates relevant research findings, and develops concrete suggestions for classroom practice. What are non-fiction texts? What texts do adolescents read?.