Create a Wikispaces Wiki (short version)
A short version of how to create a wiki in wikispaces for a class of students

Create a Wikispaces Wiki (full version)
How to do the three steps to create a wiki on Wikispaces for a class of students

How to Use zoomFox to Zoom and Pan Pictures
How to install and use the zoomFox add-in in Firefox to zoom and pan any online photo or picture.

Download YouTube Videos in Firefox
How to install the DownLoadHelper addon for Firefox and download a YouTube video with it