CentOS 6 Linux, 4-discs DVD Installation and Reference Set Award-winning CentOS Linux operating system, includes BOTH 32-bit and 64-bit versions with complete set of applications for desktops, laptops and servers Includes "Introduction to Linux" video DVD and UNIX Academy Selected Linux Training Library of 52 PDF books for new Linux users Includes printed Quick Reference Card of Linux and UNIX commands and Complimentary Evaluation Exam by UNIX Academy Productivity office suite, Web browser, instant messaging, image editing, games, multimedia and email for your everyday needs Comprehensive DVD installation includes lifetime free updates