A talented Italian artist, Raffaela Zardoni, has recently posted a beautifully illustrated course, entitled The Rediscovered Face, describing the history of the Holy Face of Manoppello from the first century until today.
http://www.youtube.com/playlist?list=PLF32FC9003C098D97
There are four segments totaling approximately 38 minutes. Originally available only in Italian, it has now thankfully been translated into English. This course is a great introduction to the wonderful image.