SDN eBook courses - Who to Download and watch???

Hello all,

I would like to download and watch the training material available from this web site. As such I have been able to go through the basic SAPtutor courses available, but the ebook files will not download nor play via the web.

Can someone please tell me

1) How to download these files?, and

2) What software I will need to install to start the training material?

Thanks

David Cooper