On Pesach Night Jews around the world commemorate the redemption for Egypt and the birth of the nation. In this light Jews spend this night recounting the miracles and events that ultimately led us to redemption.
However merely acknowledging an aspect of the redemption is not enough. Therefore Jews spend quite some time over a plan called Haggadah that directs the adherents through this process recognising that at each stage G-d was directly involved and a great debt of gratitude is owed.
The books here Haggadot the planned reminiscing over our redemption and birth. Many have interpretations commentary or stories written by special individuals or for specific type of people.