Beginner - Advanced Level Users.
This is Apple's next generation operating system, combining a powerful Unix-based kernel with the friendly Mac interface. This book is the most comprehensive resource available, a book for everyone who wants to become immediately productive with the latest version of the Mac operating system.
Not only does the book cover every feature and every built-in application in the new OS, it also includes an advanced Administrator's Section that covers Mac OS X Server - the only general book to do so.