Clear the site where you will lay the sod, removing larger stones and weeds. Dig weeds out with a spade, including the roots.
Dig up around 6 inches of topsoil, remove it in a wheelbarrow and store it near the site. Turn over the subsoil, making sure it is thoroughly loosened to a depth of 6 inches.
Amend the topsoil you removed earlier with compost in a proportion of one to one. Add a high-phosphate fertilizer to the soil according to the manufacturer's instructions.
Spread the amended topsoil across the site evenly. Firm it down with a light garden roller, then rake the soil lightly to a depth of 1/2 inch to help the sod take root. Give the ground some water before you lay the sod, enough to make it moist but not sodden.