This paper investigates a solution to support the learning of cognitively complex concepts, through the recording, annotation and online delivery of multimedia lessons. Recording lessons for online delivery has the advantage of utilising all of the pedagogical skills of the lecturers and teachers involved. To facilitate the retrieval of appropriate teaching material, the lessons are annotated using a notation called the Flexible Structured Coding Language, FSCL, which facilitates a rich and precise description of these concepts, in a natural language-like format. Different streams of meta data are produced to describe the lesson's properties, like cognitive type and media type. The approaches presented are set in the context of the IEEE draft standard on Learning Object Meta Data, LOM. 1