To clean: The best way to clean fresh parsley is to cut off the long stems and wash in your salad spinner until there are no traces of sand.
To store: Fresh parsley can be dried or frozen for later use. For either method, wash and dry parsley then chop. To freeze, place in a plastic zipper bag and freeze. To dry, spread chopped parsley evenly on a baking sheet and place in a 200 degree oven and remove from oven when completely dry. Store dried parsley in an airtight container.