"Do not be scared or intimidated by the number of different mushrooms you encounter: only about 100 of the perhaps 10,000 possible mushrooms you might see are good edibles. You might want to decouple from technology during your mushroom hunting, but a phone is very useful for tracking your location, and noting down where you find good spots, and also for photographing what you find and getting help identifying it online. Many Norwegians leave the root of the mushrooms, believing that this will help them grow back, but as mushrooms are just the fruiting bodies of vast underground networks, in reality leaving the root doesn't make any difference at all.