- Road from/to Oświęcim to Krakow is very scenic and easy to hitch. Pretty villages, farms and forests on the way.
- There is a free shuttle between Birkanau (the concentration camp) and Auschwitz every 30 mins.
- Minibus departs from Krakow main bus station and costs 24 złoty return.
- If you want to take a bus from Krakow, the best option is to take it from the bus station and ask for a ticket to Oświęcim, to the museum - some drivers have different prizes for "locals" and four tourists. "Oswiecim" is a Polish name of a town called "Auchwitz" by Germans during WW2. You'll pay about 8-12 zł.
There is a free wifi network a few meters away from the Auschwitz Museum.
Don't take the overpriced 100/140 złoty tour and go on your own. Exhibitions are described quite well with signs. Entrance to Birkanau (the concentration camp) is free of charge always while entrance to Auschwitz museum is free of charge before 10am and after 3pm. Otherwise (from 10 to 3) you have to pay 40 złoty to enter with a guide. You can enter 'till 7pm and the museum is being closed at 8pm.
If you take the guided tour: the best option would be to go with guided tour to see Auschwitz I and necessarily Auschwitz II-Birkenau AND then return to Auschwitz I to see national exhibitions which you won't see with a guide during 2 hours long tour because of the lack of time.
A free mobile app "Oshpitzin: A Guide to the Jewish History of Oświęcim" might be useful when visiting the museum.