It should automatically load your coding IDE and go to the function if it exposed
This will be your go to page though
If you search for a function in c++ you will most likely get a sub page of the documentation.
To use a class you need to add it’s relevant #include header file and if it uses a module not present in your project then you need to add it your project build file under
PublicDependencyModuleNames.AddRange(new string[] { /* inside the brackets go the needed modules */ });