What skills/credentials will help me find a job in the Netherlands?

Im a Canadian citizen seriously considering moving to Amsterdam or somewhere close to it.  I dont plan on making the move for a couple years and I'm about to go to school so I can get an education that will help me get a job down there but I'm not sure what to take.  Obviously I have specific interests that I would prefer to have a career in but it really doesn't matter.  I just want to give myself the BEST possible chance of getting work right away while I'm down there.  It looks like learning how to speak German will be a huge advantage and obviously Dutch is a must-learn.  What else should I target to ensure work when I get there (once I have the proper work Visa obviously)  I noticed a lot of customer service jobs for bi/multi-lingual persons.  This seems like an okay option.  Like I said, I want to get everything I need in order to make myself the best possible candidate.