You can find some scripts here to login and get some basic informations about the users.
The method to connect to the API is using a client secret. A certificate (even self-signed) is highly recommanded.
You can open an issue to ask for more examples.
- (All methods to conenct to Graph API)[https://dzone.com/articles/getting-access-token-for-microsoft-graph-using-oau]
- Get reports of usage
- Get Groups
- Get Teams
- Get Calendars