If you arrive by public transport:
from Central Station you can take tramline 2 or 5 and get off at stop “Paulus Potterstraat”.
If you have your back to the Van Gogh Museum, cross the street to Honthorststraat. The first street you cross is the Jan Luijkenstraat.

If you arrive by car
The easiest way is to park your car in the Q-park garage under the Museumplein.
The entrance of the garage is in the Van Baerlestraat in front of the Concertgebouw.