Auschwitz official website: https://visit.auschwitz.org/
Tickets: It's highly recommended to book your tickets ahead of time. Admission to Auschwitz could be free in the afternoon, however visitors still need to have a reservation for the free entrance, which could be made online.
Auschwitz Train ticket/timetable: https://kolejemalopolskie.com.pl/
Auschwitz by Train: From Hostel (0.7km) 7 mins walk to Kraków Grzegórzki” to station "Oświęcim". Distance from station oświęcim to Auschwitz Museum: 20-30 mins by foot, 5-10 mins with bus
Auschwitz Bus ticket/timebale: https://www.lajkonikbus.pl/
Buses from Krakow to Auschwitz The bus connections to Auschwitz/Oswiecim have their bus depots at Dworzec MDA (MDA Station), which is situated in Bosacka street and just behind the Main Railway Station of Krakow.