Sentinel Hub APIs (process, batch stats etc)

Hello ESA Step community. Apologies for asking this question in the irrelevant category but as people from ESA are here. I needed some guide map for learning the Sentinel-Hub APIs. I am absolutely new to this API, have read few documentations on things like EVAL etc but not able to understand them.
What I need is like a master class which will teach me all the APIs that ESA provides and step by step learn each API.
Kindly if you have any resources or help me regarding this I will be thankful. Specially Sir @ABraun and @marpet need your assistance in this matter.