For those who are interested in short (10-minute or so) videos introducing various computing topics as discussed by lecturers at the University of Nottingham, have a look at the “Computerphile” channel <https://www.youtube.com/user/Computerphile> produced by Sean Riley. He also runs a sister channel which delves into mathematical topics, called “Numberphile” <https://www.youtube.com/user/numberphile>.