Introducing Unreal Engine

https://www.unrealengine.com/en-US/onlinelearning-courses/introducing-unreal-engine

Your First Hour in Unreal

https://www.unrealengine.com/en-US/onlinelearning-courses/your-first-hour-in-unreal-engine-4

Lighting – Essential Concepts and Effects

https://www.unrealengine.com/en-US/onlinelearning-courses/lighting-essential-concepts-and-effects

Blueprints – Essential Concepts

https://www.unrealengine.com/en-US/onlinelearning-courses/blueprints—essential-concepts