Whatever a passenger has to do in Sweden appears to happen in a nanosecond and so easily that it is scary. Suitcases came off immediately and we followed signs to Information who had all the answers. There are many forms of transport into the city: taxi, limos, train or bus.
The Arlanda Express train operates from Stockholm Arlanda Airport to/from Stockholm Central Station every 15 minutes throughout the day. Travel time is only 20 minutes and there is a discount for students and senior citizens whether Swedish or not; just show i.d. A one-way fare is 260 Krona/$30 USD with discounts on weekends.
TIP: A 100 Krona/$11 USD surcharge is applicable if purchasing your ticket on board the train so buy in advance!