This handbook by Andy Sabish contains the information that will help you quickly master XP's flagship detector - the Deus - and includes input provided by experienced detectorists from around the world as well as the XP team itself.
Some of the topics covered include:
Whether you already own a Deus or are still contemplating the purchase of one, you will find this book to be an invaluable source of information based upon actual, in-field experience. Even if you have been using the Deus for years, just one or two new ideas or tips gleaned from the pages of this book can give you an edge over the competition, re-opening sites considered "worked out" and letting you find what others have missed!