7. The method of claim 1 , further comprising: extracting a plurality of topics from the digital text document; selecting a plurality of videos for the plurality of topics; and associating the plurality of videos to the plurality of topics.
7. The method of claim 1 , further comprising: extracting a plurality of topics from the digital text document; selecting a plurality of videos for the plurality of topics; and associating the plurality of videos to the plurality of topics. 13. The method of claim 7 , wherein the plurality of videos are selected for a portion of the extracted topics based upon whether each topic is a prerequisite for other extracted topics.