How are Unreal projects organized, which folders/files contain 'source' material, which contain 'temporary/intermediate' stuff, which contain 'end results'.
Where is configuration stored
How is main code separated from (unit) test code
How do Blueprint-only projects differ from C++ projects (if at all)
What are you supposed to store in Git, and what are you supposed to Git-ignore.
What is the normal way of working in UE4 C++ projects (where do you create classes/files; how do you remove classes (if at all); when to re-generate the project files (GenerateProjectFiles.sh)