To create a lawn, you can either seed or sod, but both require soil preparation, including removing debris, testing soil, and amending it with fertilizer and lime if needed.

Here's a more detailed guide:

Clean the Area:
Remove all existing vegetation, rocks, and debris from the area where you want to create the lawn. 

Test the Soil:
Get a soil test to determine pH levels, nutrient deficiencies, and soil type. 

Amend the Soil:
Based on the soil test results, amend the soil with lime to adjust pH and add compost or other organic matter to improve structure and fertility. 

Till and Level:
Till the soil to a depth of 4-6 inches, then level and smooth the surface, removing any remaining rocks or clumps. 

Aeration:
Aerate the soil to improve drainage and allow for better root growth.