Windows XP All-in-One Desk Reference For Dummies by Woody Leonhard

Windows is the number one operating system in the world. There’s a lot to Windows XP, with office productivity applications, multimedia features, the Internet, and security upgrades. Now and then, you probably wish you could call Tech Support.
That’s when you’ll be grateful to have nine books about Windows XP in one — Windows XP All-in-One Desk Reference For Dummies, Second Edition. It replaces a whole shelf of reference books and covers

Windows XP basics
Customization
The Internet
Internet Explorer
Microsoft Network
Hardware
Multimedia
Windows Media Center
Wired and wireless networks