Well, first off, the so-called "Burning Times" are a myth. If you want a basic, accurate history of the European witchcraft persecutions, try reading Brian Levack's _The Witch-Hunt In Early Modern Europe_.
For a fairly broad overview of the history of Western esotericism, I can recommend two historical essays by Prof. Ronald Hutton: "The New Old Paganism," and "Paganism in the Missing Centuries." Both can be found in Hutton's 2003 anthology _Witches, Druids, And King Arthur_. Beyond that, I recommend Hutton's history of the origins of modern pagan witchcraft, _The Triumph of the Moon_.