It was good to learn about a different rendering method than Unreal 4. Real-time lighting is supported through lumens instead of the existing build method, so when installing lighting,

He kindly explained that he changed the Movable settings to use lumen lighting and explained the Unreal work process and settings step by step, what a good reference is.

Even for a beginner, it was easy to follow. I think this is the best lecture for beginners who have not started using Unreal.