Raspberry PI Event - Useful Sources

In a previous posting the training event for students was discussed: http://computingnorthampton.blogspot.co.uk/2013/03/raspberry-pi-event-26th-march-2013.html

In this post I wish to share some of the sources that were used to provide basic Raspberry PI skills and request comments on others that could be used.

- how to find the operating system on-line; download and install the operating system on to a SD Card. 
    I found this resource from Adafruit useful: http://learn.adafruit.com/downloads/pdf/adafruit-raspberry-pi-lesson-1-preparing-and-sd-card-for-your-raspberry-pi.pdf by Simon Monk and the main download site for Raspberry PI OS http://www.raspberrypi.org/downloads

- Setting up the Raspberry PI including selecting basic configuration settings.         Again Adafruit one by simon Monk http://learn.adafruit.com/downloads/pdf/adafruits-raspberry-pi-lesson-2-first-time-configuration.pdf 

Are there others you would recommend?