BlackBerry Hacks -- The versatile and flexible BlackBerry handheld computing device allows you to stay in touch and in-the-know--no matter where you are or where you go. For both corporate and consumer users, BlackBerry Hacks delivers tips, tools, and innovative ways to most effectively use the all-in-one phone, inbox, organizer, and browser for phone calls, instant messaging, email, organizing, web browsing, receiving RSS feeds, and much more. Sample Hacks are available online.

Essential PHP Security explains the types of attacks that hackers use on web sites and how to correctly configure Apache and PHP to guard against them. The author of Essential PHP Security, Chris Shiflett, is an internationally recognized expert in the field of PHP security and this book shows developers how to guard against attacks by writing secure PHP code. Sample Chapter 4: Sessions and Cookies are available online.

Windows Server 2003 Network Administration -- Ideal for system administrators and network managers, this essential guide is divided into three distinct sections: fundamental concepts, tutorial, and reference. The first three chapters are a basic discussion of the network protocols and services. The remaining chapters provide a how-to tutorial for planning, installing, and configuring various important network services. The book concludes with three appendixes that are technical references for various configuration options.Sample Chapter 14, Troubleshooting TCP/IP (PDF), is available free online.

What Is Web 2.0 -- Defining just what Web 2.0 means still engenders much disagreement. Some decry it as a meaningless marketing buzzword, while others have accepted it as the new conventional wisdom. Tim O'Reilly attempts to clarify just what we mean by Web 2.0, digging into the implications of viewing the web as a platform, which applications fall squarely under its purview, and which do not.

Ambient Findability -- Written by best-selling author Peter Morville, this thought-provoking book describes the future of information and connectivity, examining how the melding of innovations like GIS and the internet will impact the global marketplace and society at large. Focused on information literacy, information architecture, and usability as critical components, this book doesn't preach or pretend to know all the answers; rather, Morville presents research, stories, and examples for support. Sample Chapter 1, Lost and Found (PDF), is available free online.

Learning SQL -- This introductory guide gets you up and running on SQL in short order. A series of chapter exercises teaches you how to generate, manipulate, and retrieve the data stored in your organization's database. Ideal for anyone writing applications, performing administrative tasks, or generating reports. Sample Chapter 3, Query Primer (PDF), is available free online.

What Is Greasemonkey -- Greasemonkey is a Firefox extension that lets you write scripts to alter the web pages you visit. Mark Pilgrim shows how to install and use Greasemonkey to enhance your Firefox surfing experience. Mark is the author of Greasemonkey Hacks.

RT Essentials -- This comprehensive guide shows you how to customize RT to better fit your organization's business needs. After introducing you to what ticketing systems are, the book shows you how to install and configure RT. From there, it explains how to perform simple tasks that will turn your RT server into a highly useful tracking tool. Sample Chapter 3, Getting Started (PDF), is available free online.