Can I grow lettuce indoors?

Yes, just use really good, moist potting soil, filling a plastic bag three-quarters full. Sprinkle a pinch of seeds on the soil and cover lightly with soil. Close the top of the bag, leaving one-inch open. Set the bag in a sunny window and when green shoots appear, open the bag more. Keep it in the sun and keep the soil moist with watering. The best temperature for your growing lettuce is between 65 and 70 degrees. When the shoots start getting large, start cutting the leaves and using them to eat.