The Giver by Lois Lowry Chapter 1

I recently started reading the book the giver by Lois Lowry. So far the book is a little confusing to me. I don't understand the concept of this place. I don't understand their place in society. the first chapter starts off with the boy Jonas getting frightened about December. He is frightened because December is the month when the Ceremony of twelves, which he will be, get their lifelong jobs in their community. he is nervous because he doesn't know what the committee will chose for him. Also, it tells how they were told to go inside because an irregular plane flew over the community. After they all let back out it was said that pilot in training who had flew over the community was going to be released. Then at dinner the family share their thoughts and feelings about their day.