The Jimenez family lived in Rancho Blanco, Mexico in the late 1940's. This is important because you know when the story takes place. You should know this that way you don't think they started out in California.
The Jimenez family decides to travel to California to get jobs. They traveled by train, car, crawled through a barbed wire fence and slept under a tree in an army tent. It is important to know that they had to do all these things just to get from Mexico to California.
They find out they can't work for two weeks because the strawberries are not done growing yet. They have to find jobs because they don't have money. This is important because you should know that they didn't have it easy right away it took time.