These videos are from the website. They are a good starting point. Many digital artists also have videos that can be found on their websites.

The History and Curation of Digital Art, Bruce Wands, 2014 Lumen Prize Panel

2003 Digital Art & Culture Symposium
Talks and panel discussions with over thirty digital artists, curators, writers and digital art historians

2014 Lumen Prize Exhibition
Talks by Lumen Prize founder, Carla Rapoport, curator Dr. Nick Lambert and exhibiting artists