The history of Thelema as a social movement can best to understood comprehensively through the following list of resources
https://blog.thelema.dev/thelemic-history-reading-guide/
Alan Willm’s blog is an excellent resource for those seeking to understand the A.’.A.’. system and the people who continue to work it. His history guide provides insights from first person accounts from practitioners, non-practitioner scholarship, and multi-perspective approaches to get as fully formed an understanding as possible.