History of the Reformation of the Sixteenth Century provides one of the absolute best accounts of the Reformation and it will teach you everything you need to know. When the idea of writing this historical account first occurred to D'Aubigne, he stated that he was young, and felt strongly impelled to give a narrative of the wonderful works that God had wrought for Christendom in the Sixteenth Century. He earnestly desired that it should glorify God and he felt that the Holy Spirit, which then worked in so many hearts, might again manifest His power, and bring to God some souls as yet unacquainted with His saving strength. In addition to the spiritual significance of his work, D'Aubigne was deeply concerned about historical accuracy. He researched both public and private libraries and deciphered many manuscripts of the Sixteenth Century many of which were unknown until he made use of them.