Microsoft.PowerBI.Api C# / dot Net beginner's tutorials?

Hello folks,

I have a lot of experience with PowerBI, but I am a C# / dot net beginner. Can you recommend an absolute beginner's guide on how to implement and use the functions in the Microsoft.PowerBI.Api package available in Visual Studio for C#?

Preferrably some smaller, ready-made examples where you only have to provide login credentials and dataset / report / group Id to get it working.

Thanks in advance,

Cheers Mike