I fly mostly in the eastern part of Norway, around Oslo. The airspace is a bit more complex due to the proximity to Gardermoen (ENGM), Torp (ENTO) and Rygge (ENRY). Still not difficult to navigate but up-to-date charts is a must. The airspace around Oslo Gardermoen was significantly changed on April 7th this year. Most of the major airports have landing fees, and not all airports have 100LL. Check to make sure before you go there. Personally one of my favorite airports is ENHA, Hamar Stafsberg, a small uncontrolled field, 800m asphalt, 100LL available. It's located about 30 minutes of flying north of Oslo Gardermoen.
The Norwegian CAA has released a VFR-guide for flying in Norway, you can find it here
- GA
On
http://www.ippc.no you can find the Norwegian AIP as well as other information regarding wx and flightplanning.