Remember if the site is in Norwegian, it is easy to translate with Google translate or within Chrome.
DigitaltMuseum (a place to find photographs, things/artifacts, persons and much more)
Facebook (an example of a group with pictures from a Norwegian municipality)
This link is to a bibliography for Farm books
(if you want to see what is published for a specific municipality, go to the right county by scrolling down to the blue area. Click on the county and on the page you arrive at, the municipalities are listed. Click the right one. )
An accurate and informative blogpost
How to Find the Ancestor’s Town of Origin
FamilySearch – Norwegian Genealogy
How to type Æ,Ø, Å
Where to search
Slekt og slikt – Laila Normann Christiansen
Barnas hjerter til fedrene – Cathrine Apelseth Aanensen
Both have an option to translate the text to English.