He made it more Complecated ! sorry find another teacher
Hello Mohammed. It's ok to not like a particular style of a course. You can always watch it fully nonetheless, there's always stuff to learn. There's another Fundamentals of lighting, this one it's by Jonathan Lampel. Linking you up if you want to take a look:
https://cgcookie.com/courses/fundamentals-of-digital-lighting-in-blender
I believe in not just showcasing the basics, but also covering important conceptual information. This will help your brain understand the concepts better in my experience. Sorry to hear you found this over-complicated, but I strongly believe this additional information is a long-term benefit.