TubeMarx creates indexes of titles or topics along with their timing within each video. Any user can then search all YouTube registered channels or a specific channel using keywords within many videos so he/she can get to the specified video content directly in all the lectures containing such a title which is related to his/her search keyword. Then the user through playback of each specific video result will start watching the video from the desired segment in an automated manner. The user will be able to choose from other topics displayed under the same lecture.A Dynamic Related Topics Column is shown in the watch video page on the right side of the main video. These related topics change automatically once the topic the user is watching changes in the main video. In addition, video owners can add quiz & questions at the end of each topic or title in their videos turning watching their videos into active learning experience.