Youtube has become a rich source of learning resources. Considering the dynamic landscape of content, consolidating some of them in this post as an appendix for the Book Shelf. Most efficient way to use the resources would be to subscribe the channels or save course specific playlists by signing in. Sanitizing the home page weekly by removing suggested channel recommendation can help cultivating a richer recommendation system over a period of few months.
Following list is unordered since some of the links happen to be umbrella for versatile content. Opting an alphabetical order for ease of maintenance.