The exact directions will be sent to you when you book your place!
The festival will be held near the village of Malonty in the south-west of the Czech Republic and it can be easily reached by train from Prague or Brno, Vienna or Frankfurt. Even from Katowice in Poland. The trains are inexpensive and tickets can be booked online. You can check timetables here.
If you’re flying in the closest airports are Prague, Frankfurt, Vienna and Katowice but only a little further away are Bratislava or Budapest which have cheap and frequent bus connections to the Czech Republic.
Check out www.skyscanner.net for cheap flights.
Just bear in mind that there are lots of ways to get there so it might be that you can fly into Berlin, Krakow or Zurich and then catch a cheap train, bus or car pooling connection to the Czech Repubic and the festival!
Hitchhiking is easy, too..