While I don't normally recommend that businesses try and move their employees away from Windows on the Desktop, I think a great place to start tinkering with software that doesn't come from Microsoft is on your home computer. Those who take the jump to Linux might find that it isn't as difficult to use as they may have thought.
I've recently found two good resources for those who are thinking about making the switch.
Desktop Linux For The Windows Power User: This seventeen page guide is written for Windows users. It walks the user step by step through the process of installing and running Ubuntu Linux. From the article, "This article will walk you, the Windows power user, through the Ubuntu installation process from downloading the CD image to finding help online. Most of the hang-ups that I experiences with Linux could have been easily overcome with simple Windows analogies."
Ubuntu Pocket Guide and Reference: This booklet is written to help you once you make the switch to Ubuntu Linux. The book covers many of the beginning steps but also dives into topics like, the filesystem and permissions, using the command line and security. The best thing about this guide, it that you can download it for free.
