Apply starter fertilizer. Use a spreader for best results. A compost spreader is helpful. Measure carefully before you order your sod, and install it the same day it arrives. Fall is the best time to plant, especially from seed.
Spring is next best.
Sod can be installed at any time of year if soil can be properly prepared and watering will be carefully monitored. Bermudagrass is planted in the late spring from stolons, which are available from specialty growers.