HOW TO USE C++ EXPLOIT API? (MANY QUESTIONS)

What's the class name that I have to make an object for?

How can I include .dll file into my project? Or maybe there's a specific method to include this?

Name of functions that are inside of the class? (idk how to check their name) (I'm still assuming this .dll is a header or a .cpp file)

There was a tutorial in Wearedevs youtube channel but now I can't find the videos, they're all deleted.