In truth, materials and lighting are rarely separate. Procedural textures happen alongside the lighting conditions they'll be viewed in and can dramatically change in their coordinate mapping once they're wrapping around a specific mesh. You might find areas where UVs, Box, and other setups work best. There are many aspects to the final kitchen where you'll tinker in areas that might benefit from a new material or a quickly modeled addition.
In the next chapter, you'll put these materials into their final arena as we light our kitchen with Eevee's real-time rendering tools.
