How to implement a Teams App interacting with Common Data Service

Hi,

I am very new on Teams App development, I have never done that before. I have a good C# and React JS development skills. I would like to implement a Teams Apps that will interact with a Common Data Service (with CRUD Operations).

I do not have any idea what to begin with.

Please, could you help me to start ( with any documentations, examples, samples, suggestions,...) ?

Thanks,

Arioule