Hi Guys,
I’m new, after the registration, contenful said me if I’m a creator of content or I create the content buy api ecc
I slected the option on the left (creator of content) but what was the difference… Now I’ve the simple pannel where I can insert datas by forms… create new organizations ecc… but I don’t find nothing about api and the endpoint…
How should I start?
Welcome to Contentful 
The API documentations are good places to start. I will suggest you to start with Delivery API and Management API references. Each section has code snippet for different SDKs also curl command.
Hope that helps!