OpenCourseWare, Linux Virtualization, and a Free Ruby Book

How To Go To M.I.T. For Free

http://www.csmonitor.com/2007/0104/p13s02-legn.html
M.I.T. OpenCourseWare

Linux Virtualization Overview

http://www-128.ibm.com/developerworks/linux/library/l-linuxvirt/?ca=dgr-lnxw01Virtual-Linux

Free Ruby Book

http://www.humblelittlerubybook.com/book/