I decided to make an update to my free software poosted. I have removed the picture of Richard Stallman and replaced this with an explanation of GNU and LINUX. Hopefully this illustrates the relationship between the two.
I have a DVD that I made with various videos explaining all this, along with a video about creative commons. I can show this at the tech jams. If anyone is interested.
This new version has CAS in the filename as I intend to upload it to the Computing At School forum.
I will get this put on github later today