Another pi jam today and it went very well highlights as follows
We helped on visitor get up and running and ended up re-creating an sd card with raspbian (1)on in order to get the Pi up and running. In the end Tom got everything up and running, with some help from myself as I seem to have an array of adapters and other bits and pieces which always seem to come in handy. Including various images on my netbook.
Our younger visitors were busy with various projects Arduino (6) hacking and getting Arch (2) Linux up and running in a virtual machine, (Virtual box) (3))
I have loaned out my pi-liter (4) to one of the younger visitors so he can demonstrate at school
1.) http://www.raspberrypi.org/downloads/
2.) https://www.archlinux.org/
3.) https://www.virtualbox.org/
5.) http://shop.ciseco.co.uk/pi-liter-8-led-strip-for-the-raspberry-pi/
Support repositories for the pi liter
https://github.com/zleap/RaspberryPI
and
https://github.com/zleap/compgroup
Which has some ladder board source code, but should demonstrate the use of the GPIO.
You can also download the pi liter data sheet from the website http://shop.ciseco.co.uk/pi-liter-8-led-strip-for-the-raspberry-pi/
However you DO need to install python-pip with
sudo apt-get install python-pip
For some reason the data sheet instructions missed out this step.
The next Pi jam is on 10th January so if you get a Pi for Xmas come along and we can help you get started or show you what you can do with it. We don’t BYTE 
and are happy to help.