Since chocolate doesn't like extreme temperature changes, the best way to store it is in an airtight container at room temperature. Just remember it will harden in the shape of the container you use and that may make it hard to remove from the container. I recommend using a microwave safe container so you can pop it into the microwave on 50% power for 30 seconds at a time until it softens enough to be removed from the container or is melting consistency if you want to use the chocolate right from the container.