Thanks for giving XPDTR a try! We will be posting some tutorial videos here shortly. In the meantime, the most important thing is to ensure that you have the Adobe Acrobat Reader plugin installed on your computer, and that your browser is configured to use Adobe Reader instead of its native PDF reading application.
Acrobat Reader is available for download here - https://get.adobe.com/reader/
For instructions on how to configure your browser to use the Acrobat plugin, check out this link:
If you have specific questions about getting Acrobat to work with your browser, feel free to post them here!