How to pick: Choose brightly colored squash that has a nice firm feel to the touch. Freshly picked squash will still have some prickly fuzz on it. Also try to choose smaller sized squash, which will tend to be sweeter and have smaller seeds.
How to store: In a plastic bag or container, wrap the squash in paper towel and store in your refridgerator's crisper. The paper towel will absorb excess moisture, keeping the squash nice and firm.