Click on the Demo Lesson, it will download to your computer, when you open it click on index.html and the file will open and you can watch the short demo. This includes an embedded swf file (Adobe Flash). To be able to download it you have to enable your browser to allow flash to be downloaded. The other option is that you you can purchase the $20 plan. If you decide against using the course in the first week I will refund your fee.