Genesis deals with the origin of the world, of man and of the people of Israel. Exodus is an account of the epic journey of the Israelites from Egypt to the Promised Land. Leviticus deals with ritual holiness and worship.
Numbers takes it's name from censuses and lists of the Israelites.
Deuteronomy, in three great discourses attributed to Moses, describes the later stages of the Exodus. Exactly What Scripture Means, by Patrick Madrid. Become an effective spokesman for the truth of Catholic teaching.