How can I effectively compost leaves and grass to create nutrient-rich soil for my garden?

To effectively compost leaves and grass for nutrient-rich soil, create a compost pile with a mix of brown materials (like leaves) and green materials (like grass). Turn the pile regularly to aerate it and speed up decomposition. Keep the pile moist and ensure proper airflow. In a few months, the compost will be ready to use in your garden to enrich the soil with nutrients.