How can I effectively mix grass seed with compost for optimal growth and results?

To effectively mix grass seed with compost for optimal growth and results, first ensure the compost is well-aged and free of weeds. Mix the grass seed evenly with the compost in a ratio of 1 part seed to 3 parts compost. Spread the mixture evenly over the desired area and water regularly to keep the soil moist. This will provide nutrients and a good growing environment for the grass seed to germinate and thrive.