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Lighting (LX)
Information about a Lighting Designer's responsibilities throughout the show process can be found on the Shows pages.
Adam has written a guide on being an LD for a WAC show here.
Gels
Gels are thin transparent coloured film that are placed in front of a light source to colour the light. Lights with gels are called "practical" lights, to distinguish them from other coloured light sources such as LED's. You'll need to find the LX cutting board (it has useful size guides) and a stanley knife to cut these into squares for your lights.
Gels are also used by sound designers! The RAT music stands (music stands with lights) are often too bright, so we gel them with a light blue colour. This makes their appearance less harsh while still allowing musicians to read their sheet music.
Gobos
Gobos are thin metal plates with designs cut into them. They are put in front of spotlights to project that image onto the set.