Stephan A. Hoeller, a scholar of gnosticism and bishop of the Ecclesia Gnostica in LA, lectures on Essenes and Early Christianity.
I have taken this from this website where they are offered for free (http://gnosis.org/welcome.html) and uploaded them to YouTube in order that they might receive a broader audience.
Visit http://gnosis.org/welcome.html for more information.
Books by Stephen Hoeller – http://amzn.to/1LrIAlh
– Gnosticism: New Light on the Ancient Tradition of Inner Knowing: http://amzn.to/1LrICK1
– The Gnostic Jung and the Seven Sermons to the Dead: http://amzn.to/1SvnfyX
– The Fool’s Pilgrimage: Kabbalistic Meditations on the Tarot: http://amzn.to/1LrIIkL