Easy Mac OS X, v10.4 Tiger
by Kate Binder: Easy Mac OS X Tiger provides you with everything you need to know about the Mac OS X Tiger operating system with a streamlined, visual approach.
Mac OS X Internals: A Systems Approach
by Amit Singh: Mac OS X Internals: A Systems Approach is the first book that dissects the internals of the system, presenting a detailed picture that grows incrementally as you read. For example, you will learn the roles of the firmware, the bootloader, the Mach and BSD kernel components (including the process, virtual memory, IPC, and file system layers), the object-oriented I/O Kit driver framework, user libraries, and other core pieces of software.
Mac OS X Tiger: Missing Manual
by David Pogue: Mac OS X: The Missing Manual, Tiger Edition is the authoritative book that's ideal for every user, including people coming to the Mac for the first time.
Running Mac OS X Tiger: A No-Compromise Power User's Guide to the Mac
by Jason Deraleau, James Duncan Davidson: Running Mac OS X Tiger is divided into three parts: "Getting Started" introduces Mac OS X and explains how it's put together and why it works; "Administration Essentials" gives you the tools you need to examine how your system is running and adjust all the knobs behind its operation; and "Networking and Network Services" covers the ways Mac OS X interfaces with the world around it, including wireless and spontaneous networking.