Whether you are experienced or new to Norwegian genealogical research, one must know location-physical and online-is the Norwegian American Genealogical Center & Naeseth Library located in Madison, Wisconsin. The website provides, free-of-charge, a significant amount of information for the beginner: getting started guidance, information on naming patterns, and links to many important online resources. However, membership brings a lot of benefit beyond general support for the organization, it gives you access to several great databases of indexes, among which include important indexes to births, marriages, emigration, and cemetery records.
If you are in the Madison area the Center has a significant collection of Bygdebøker and family histories, as well as much more.
For researchers new to Norwegian genealogy the Center sells a rather good booklet “A Research Guide for Norwegian Genealogy.” This is probably the best printed work for Norwegian genealogy. It is focused on general Norwegian genealogical topics and is flawed only in that, like any printed source, it cannot keep up with the changes in online available record types and methodology. It was last updated in 2013, so it is still relatively fresh.