It's worth noting that coffee beans are taken from a living plant - so it has a limited shelf life. Because of this, coffee storage is important to ensure great flavor. First, to get the best flavor, brew it within two weeks of roasting and immediately after grinding. Second, buy your coffee in vacuum-sealed bags. Along the same line, avoid the self-serve displays at your local grocer because there is no telling how long the beans have been there. Finally, remember that air and moisture are the two main enemies of coffee. If you have fresh beans, store them at room temperature in an airtight container. If you have more beans that you'll use in a week, put them in an airtight container or a Ziploc with all the air removed and place the beans in the freezer. Once you take the beans out of the freezer, don't re-freeze them as you'll hasten flavor decay.