How does Nasjonalbiblioteke online work

I have over the years wanted to access a book at Nasjonalbiblioteke. I even went so far as to set up an online account. However I was not able to use the site as I did not have a IP address located in Norway. That seems to be a requirement to use the site. My question is if a book is located on the online site and you have a useable account, what do you see. Are you able to look at pages from the book. Here is a link to a book that was used as a source on an online Family Tree that I encountered while working on a recent query. The source gives the pages that are used to document the family so being able to look at the pages or even scan them would be useful. What is possible if one can access the site? The book is Gården Vea i Ringsaker og slekta der and the link to the site is Link