We are planning to do "Norway in a Nutshell" trip in early May. We will be starting in Oslo and ending in Bergen. I understand you take a 6:60 AM train from Oslo to Myrdal and that you should reserve that train in advance.
Then you take a scenic tourist train down to the fjord hamlet of Flåm.
Then you catch a catch a ferry to the village of Gudvangen.
Then you take a bus to Voss.
Lastly you take a Train from Voss to Bergen.
MY QUESTION IS WHERE DO YOU BUY YOUR TICKET(S) AND WHAT DOES IT COST?