The software of choice for screen capture type instruction videos is Camtasia Studio http://www.techsmith.com/camtasia.asp . Once you download and install the software, you can immediately start making your own "How To" videos (if you have a microphone).
As an example, here's a video about the FREE Visual Web Developer Software from Microsoft...
http://www.watchandlearnvideos.com/?v=1
A great way to earn some gold is to create some videos using Camtasia Studio and publish them here at the WA Share Zone. After all, visual learning is not only fun but effective...
Once you've got a good video you can also post your videos at these sites for exposure.