Links and Resources to help you learn

Lighting

Ethernet networking (sACN, RDMnet, LLRP & Art-Net) (YouTube)
Hang a Light(YouTube)
Hang a Light another take(YouTube)
Stage Lighting Design 101 Online Book
This is at least 10 years old, but the physics of lighting haven’t changed.
Chapter 5 - Stage Lighting Fixtures: concentrate on Ellipsodial Reflector, Fresnel, Followspot, PAR64 and Striplights. The other lights are not common any longer.
Chapter 6 - Mechanics is great to understand how we talk about light.