Flybus is a great hit but DON'T pay in your home currency if they make the offer—their exchange rate is a ripoff and you will lose a few bucks if you do.
Get the eggs and bacon at the cafe, then take a bus to Landmannalauger to stay in your tent for 18 hours and listen to French tourists complain about the weather.
The name "auroras" is now the more common plural of "aurora"[Northernlight], however aurorae is the original Latin plural and is often used by scientists; in some contexts, novatripper.is
Free wifi! Take the bus from here to the Blue Lagoon, Keflavik or do a tour with Reykjavík. Don't take a taxi to go to the airport, Flybus is much cheaper!
Arrival, departure and ticket shop for the Flybus. Also (big) lockers available to store your luggage if necessary. Famous Hallgrímskirkja is in 10 Minutes walking distance.