Devices, computer-readable media, and methods for assembling a course for a subject are described. For example, a method may include a processing system having at least one processor identifying a plurality of content segments of a plurality of content sources of a subject having greater than a threshold similarity, and determining that a first topic is part of a core topic of the subject based upon a number of instances of the first topic within the plurality of the content segments. The processing system may then receive a request from a user device for a course for the subject, assemble the course for the subject including at least one of the plurality of the content segments having the first topic that is determined to be part of the core topic, and present the course to the user device.