Abstract: Technologies are described herein for authoring, sharing, and consuming online courses. A lesson creation extension executing in conjunction with a presentation application can be utilized to create an augmented presentation document having one or more slides. A video recording of a presentation of the slides may be made and associated with the slides. Digital ink made on the slides may also be recorded. The slides might also be created to include quizzes, interactive labs, and other types of interactive content. The augmented presentation document can then be published to a portal system for sharing. A lesson player can be utilized to play back the lesson from the portal system. During playback, the recorded audio, video and digital ink are played back in synchronization by the lesson player.