This article on using the Linux Desktop sounds interesting. Sorry I haven’t had a chance to examine the content. According to the preface “This user guide is meant as an introductory guide for a user to use a modern personal computer (PC) running the Linux operating system. The main aim is to provide a self-learning guide on how to use a modern Linux desktop system. It assumes that the user has no prior knowledge of Linux or PC usage.” It’s intended for end users and those who may be required to train end users.

The guide has thirteen chapters presented in both OpenOffice and PDF formats it’s not online and you have to download each chapter. The chapters are available here. For those who train end users it includes presentation slides which are to be used in conjunction with the guide. Let me know what you think :-)