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It would definitely be helpful having a session on the authentication component of Graph API. In my experience, this is the hardest part of anything Graph API. Once you get a proper App registration created with permissions, it's all just Powershell which a lot of admins are familiar with.
I'll give my vote to this. It was definitely the most difficult struggle I experienced (Being a sysadmin with no API interaction experience). And once you learn that this permission can be handled directly on the command line OR through an app registration (and then further into delegate/user permissions), the eyes glaze over. Deciphering which permissions the commands can use vs actually use is also challenging.