Linux Pocket Guide gets you up to speed quickly on day-to-day Linux use. The book begins with general concepts like files and directories, the shell, and X windows, and then presents detailed overviews of the most essential commands. You'll learn each command's purpose, usage, options, location on disk, and even the RPM package that installed it. Throw in a host of valuable power user tips and a friendly, accessible style, and you'll find this practical, to-the-point book a small but mighty resource for Linux users.
[Full Description]
Linux/Unix System Administration Online Courses by O'Reilly
Learn Linux and how to administer Linux/Unix systems and gain real experience with a root access Linux account from O'Reilly. This four-course series covers the Unix file system, networking, Unix services, and scripting. Completion of this Series earns a University of Illinois Certificate in Linux Administration.