C in a Nutshell -- This long-awaited book is a complete reference to the C programming language and C runtime library. Its purpose is to serve as a convenient, reliable companion in your day-to-day work as a C programmer. C in a Nutshell covers virtually everything you need to program in C, describing all the elements of the language and illustrating their use with numerous examples. Sample Chapter 10: Structures, Unions, and Bit-Fields is available online.

This fifth edition of Running Linux is greatly expanded, reflecting the maturity of the operating system and the teeming wealth of software available for it. Hot consumer topics such as audio and video playback applications, groupware functionality, and spam filtering are covered, along with the basics in configuration and management that always have made the book popular. Sample Chapter 6: Electronic Mail Clients is available online.

Skype Hacks tells you what all the Skype hype is about, explains the basics, and shows you more than 100 clever tips and tricks for tweaking and tuning Skype so you too can enjoy free phone calls and services. Sample Hacks are available online.

The C++ Cookbook will make your path to mastery much shorter. This practical, problem-solving guide is ideal if you're an engineer, programmer, or researcher writing an application for one of the legions of platforms on which C++ runs. The algorithms provided in C++ Cookbook will jump-start your development by giving you some basic building blocks that you don't have to develop on your own. Sample Chapter 10: Streams and Files is available online.

PHP in a Nutshell is a complete reference to the core of the language as well as the most popular PHP extensions. It covers the functions commonly used by a majority of developers, so you can look up the information you need quickly. Sample Chapter 16: Manipulating Images is available online.

Internet Forensics shows you how to nab the bad guys by extracting the information that lies hidden in every email message, web page, and web server on the Internet. Real-world examples illustrate all the major techniques discussed. Sample Chapter 4: Obfuscation is available online.

Asterisk: The Future of Telephony -- Many organizations are drawn to Internet telephony's promise of cost savings, and its ability to move data, images, and voice traffic over the same connection. Asterisk, an open source system than runs on Linux, offers the best option. This guide covers installing, configuring, and integrating Asterisk with existing phone systems, without the need for additional hardware. Sample Chapter 5: Dialplan Basic is available online.