This lecture introduces the concept of digital educational content, covering resources like e-books, wikis, blogs, videos, and simulations. It discusses the integration of existing digital resources, copyright issues, and the classification of educational materials as either open educational resources or copyrighted material. The lecture emphasizes the importance of open educational resources (OER) and explains the 5R permissions for OER: retain, reuse, revise, remix, and redistribute. It also provides examples of platforms where educational content can be found, such as OER Commons, MIT OpenCourseware, and Khan Academy. The lecture concludes by highlighting the activities involved in exploring and evaluating open educational resources.