The story of Joseph in the Old Testament runs from Genesis chapter 30 (his birth) to Exodus chapter 1, which records his death.
Joseph in the New Testament is mentioned in the Gospels, primarily in Matthew and Luke.
Samson was a Judge of Israel, so you should find him in the Book of Judges.
Mainly Exodus, and he is also prominent in Leviticus, Numbers and Deuteronomy.
Mostly Exodus, although there are other parts in which Moses was directly involved in Leviticus, Numbers and Deuteronomy.
Genesis
There are two quite different Christmas stories in the Bible, one in Matthew's Gospel and one in Luke's Gospel. You could choose either one or, like most Christians, follow both and ignore the...