I have been using NBI for my CLE for years and usually have a good experience. The process of buying this seminar went fine and I had an issue that required contacting them by phone -which all also went fine. The seminar itself had some good presenters and content. But the agenda and organization of the materials was confusing and hard to follow. The seminar had a substitute presenter for some of the topics (someone who did not write the seminar materials). While I have no issue with the substitute presenter, that process diminished the value of the topic and materials. I think there should have been a notice on the site that would have alerted a purchaser to the change. I would have preferred to have selected a different seminar. NBI - you should consider giving a notice for the on-demand videos when this happens.