One of the largest issues with the GNU/Linux desktop has been a lack of training, or training materials, which are publicly available. There's a lot of information out there, though not always in the same place - and not necessarily in the order that a new user would need it.

It looks like things are changing. The User Guide to Using the Linux Desktop doesn't get into installation - assuming that it's already done - but it does walk the average person through using his or her GNU/Linux machine. It's all in one spot - 13 Chapters, ranging from 'Getting Started' to connecting to the internet to using OpenOffice.org.

There are even Training materials in the form of slides. Sorry, no Microsoft formats. You'll need OpenOffice.org to use the slides - with promises of PDF files coming shortly.