Excellent PowerPoint information updated in 2023.
Links
[1] https://drive.google.com/file/d/1w9cvqZqNij9KBSWHjK9Ae7q29JfE47Pl/view?usp=sharing
[2] https://docs.google.com/presentation/d/16_OLr6xQgCnLNg6bPXLu-XjiQlrmvwRQ/edit?usp=sharing&ouid=110473079778785265880&rtpof=true&sd=true
[3] http://www.rethinkpot.org/tags/delta-8