Remember we learned about how the Old Testament is all about what happened before Jesus was born, and that you can split it up into 4 parts: Law, History, Poetry, Prophecy.
There are five books of Law, and they are:
Genesis, Exodus, Leviticus, Numbers and Deuteronomy.
The first book Genesis means beginning.
There are many well known people from this book that you might remember:
Adam & Eve - The first people God created.
Cain & Abel - Children of Adam & Eve.
Noah - Built the ark to avoid the flood.
Abraham - Made a promise with God, father of the Israelites.
Isaac - Abraham's only son, almost sacrificed but saved by an angel.
Jacob & Esau - Twins, Jacob gets renamed as Israel.
Joseph - Coat of many colors.
(from: wikipedia - Book of genesis)