How do I get to the Amsterdamse Bos through means of public transport?

Train: Take the train to the airport (Schiphol) and from there you take bus 199, this bus will bring you in approximately 20 minutes to the festival site. The bus stop is right in front of the campsite (which is adjacent to the festival site). 

Bus: From Schiphol Airport you can take bus 180/186/190/300 every couple of minutes to "Knooppunt Schiphol Noord" from where you can take bus 186 to "Amstelveen, Nieuwe Meerlaan", which goes every 30 minutes and stops at a 5 minute walking distance from the festival site. Alternative, take bus 180 from Schiphol Airport to "Knooppunt Schiphol Oost", from where it's an 11 minute walk to the festival site. From Central Station Amsterdam, it's best to take a train to Schiphol Airport and follow the route as described above.

Other busses and routes are also available but not recommended (as it’s a longer walk or you could get lost in the woods).

Metro/tram:
 Since the restructuring of the public transport routing in 2019, these options take longer.

Actual routes, schedules and times can be found via  http://9292.nl/en and Google Maps.