If your wine has a cork, it’s best to store it on its side to prevent the cork from drying out and allowing air to leak into the bottle. Countertop wine racks are ideal for this kind of side-storage and keep your favorite bottles close at-hand.
If you have a temperature controlled space, it’s often best to store wines below 70 degrees fahrenheit and avoid direct sunlight. When in doubt, ask your neighborhood sommelier for their recommendation.