Today I am going to give away a ebook “Hacking Windows XP” by Steve Sinchak. Its a nice book which contains all the tricks right from customizing windows according to your needs to security tips.  Here are the brief contents of the book:
1) Customising your system.
2)Increase your system’s performance.
3)Securing your system.
As you can see, it has all those features which a XP user should know. Every trick is clear, understandable, and everything is explained with screenshots. I link is given below. Download it . No waiting, no captha, just click on the link and download begins.