Spread them to dry for a few days when it is not raining then store them in a basket or crate that is well vented. In the South we like to cure ours. This means storing them at about 100 degrees (old tobacco barn was good) for a month or so. It makes them sweeter. Now, I put mine in a small closet where my hot water heater is located to cure. The attic might work. They get better after a few months. Once they begin to sprout in the spring, boil them, skin them, and freeze them taters, rather than allowing them to spoil.