To start lighting design, begin by understanding the event's purpose, theme, and key areas that need illumination. Create a lighting plan that outlines the placement and types of lights needed, such as spotlights, uplights, and wash lights. Consider the desired mood and effects, and select appropriate lighting equipment. Set up and position the lights according to your plan, ensuring they are securely mounted and properly angled. Test the lighting setup, making adjustments as needed to achieve the desired ambience and ensure everything functions correctly.