Esp32 Cam: Source to learn??

Hi. I am interested to kickstart a project on object detection with esp32 Cam. I will attach the project's youtube link below. I emphasise more on foundation of concepts to learn them better. I would like to learn how to code it from basic. Which resource can be helpful?

Yt: https://youtu.be/f2TUxoaKIsA?si=FNbcQwqrYPLzQVOf