I have taken an admission in IT Degree and i am taking very much interest in hacking and all things. But i do not want to hack any system by wrong intentions but i just want to hack systems to make some good changes in it. So i thought why not to start with the Windows XP itself which i am using from last 3 years. I have heard that the "Hacking Windows XP - Extreme Tech" written by Steve Sinchak is a nice book for learning the tricks to hack windows xp system and even eBooks are also available. Can anybody tell me that how this book is and should i use it or not?