You will want to check out the private question and answer board for this download for specifics on some of the exclusive content. If you have any specific questions about the magic discussed during the lecture you can also send a support ticket to customer support. We should be able to help if you have any issues with understanding the magic discussed.
More generally, additional materials are usually included as a PDF or video on the download page.
Atlas includes a URL for a larger document that he keeps up on his website. That URL can be found in the private Q and A board for the lecture.