Ajax on Rails -- In a few short months, Ajax has moved from an obscure and rarely used technology to the hottest thing since sliced bread. This article introduces the incredibly easy-to-use Ajax support that is part of the Ruby on Rails web application framework. This is not a step-by-step tutorial, and I assume that you know a little bit about how to organize and construct a Rails web application. If you need a quick refresher, check out Rolling with Ruby on Rails, Part 1 and Part 2 or read more.

Learning Windows Server 2003, 2nd Edition -- This compact guide provides the nuts and bolts for installing, configuring, securing, and managing Windows Server 2003. Topics include patch management, Active Directory replication, network access quarantining, server clustering, and more. Designed for system administrators of all levels, the 2nd Edition has also been completely updated for Service Pack 1 and release R2. Sample Chapter 4: Domain Name System is available online.

Essential Microsoft Operations Manager -- This comprehensive tutorial gives system administrators a solid foundation for planning, implementing, and administering Microsoft Operations Manager (MOM) 2005. Learn how to program MOM so it automates burdensome and lengthy diagnostic tasks, making your life as a troubleshooter easier than ever. Features practical, real-world advice from MOM expert Chris Fox. Sample Chapter 6: Operator Console is available online.

Active Directory, 3rd Ed. Fully updated to cover Active Directory for Windows Server 2003 SP1 and R2, this third edition is full of important updates and corrections. Discover how to design, manage, and maintain a small, medium, or enterprise Active Directory infrastructure. Sample Chapter 11: Active Directory Security: Permissions and Auditing is available online.

With C# Cookbook, 2nd Edition, you'll be able to learn and improve your mastery of both the C# language and the .NET platform. This updated bestseller has been completely revised to account for C# 2.0, the latest version of this popular object-oriented programming language. It also includes more than 100 new code solutions (over 300 overall) to common problems and tasks that you're sure to face as a C# programmer. Chapter 4: Generics is available online.

SQL Cookbook -- This convenient guide is for anyone who wants to take his or her SQL skills to the next level. Packed with over 200 recipes, the SQL Cookbook helps you conquer common data query and manipulation problems, including those related to window functions, data warehousing, and string manipulation. Features an easy-to-grasp problem-solution-discussion format.

AppleScript: The Definitive Guide, 2nd. Ed. -- Fully revised and updated--and with more and better examples than ever--AppleScript: The Definitive Guide, 2nd Edition explores AppleScript 1.10 from the ground up. You will learn how AppleScript works and how to use it in a variety of contexts: in everyday scripts to process automation, in CGI scripts for developing applications in Cocoa, or in combination with other scripting languages like Perl and Ruby. Chapter 27: Writing Applications is available online.

Linux Server Hacks, Volume Two -- This handy reference offers 100 completely new server management tips and techniques designed to improve your productivity and sharpen your administrative skills. Each hack represents a clever way to accomplish a specific task, saving you countless hours of searching for the right answer. No more sifting through man pages, HOWTO websites, or source code comments -- the only resource you need is right here. And you don't have to be a system administrator with hundreds of boxen to get something useful from this book as many of the hacks apply equally well to a single system or a home network. Sample Hacks are available online.