How to clean paintbrushes with oil paint?

Put the turpentine (turpentinoid) in a gl jar. Do not store it in a plastic container, it will eat through the plastic. Dip your brush in the turpentine and the turpentine should remove the paint. Afterwards, wash the brush in a solution of dish soap (regular old ajax or palmolive) and water. If the brush has dried in paint, go and buy a brush cleaner/conditioner. They usually carry them at places like Michael's craft stores among other places.