Hi Mur,
The link you provided accesses Hortonworks HDP 1.1 for windows which is in beta. I believe you need to go here:
http://hortonworks.com/thankyou-hdp12-talend/?mdl=13577&ao=2&lnk=1
then it will automatically download the tar file, when extracted should have the HDPDEMOS.zip file that Kai is referring to.
Hope that helps.
Regards,
Robert