Cut the squash in half the long way, and use a vegetable peeler to remove all of the skin and bitter green hued flesh.
If you mean the sport: All months, as it is an indoor sport. You can play it whenever you want.
If you are talking about the plant: There is both summer and winter squash. The best time to start growing squash is about a month before the last frost of the year. You just harvest them once they are mature.
The website below might help with growing your own squash.
Bake acorn squash at 400 degrees F. Cook for an hour to an hour fifteen minutes.
An edible gourd, the flesh of which may be cooked and eaten as a vegetable.
It can be, but it does go brown quickly. To prevent this, either keep it in water in the fridge, or squeeze lemon juice over it.