My parents have the best compost piles I have ever seen. They started out with a small space behind their Rhododendron with a pile of compost in which they added all their light yard waste and clean kitchen waste for one year. The following year they started a pile in the corner behind the garage. The third year they picked a spot behind the garbage can holder. By this time the first pile had sat for two years and Dad started screening it and adding it to their gardens. By the end of the third season they were ready to use this space for composting the next year. Well, mom and dad have lived in this house for thirty years and always have a compost pile going, one sitting and one for screening. They have gardens to be envious of.
Dad never turns his piles, he just lets the sit and cook on their own, when screening anything not broken down gets added to his new pile. I have to say they also have the most amazing earth worms I have ever seen.