TRAINS
Ø The most important thing to know is that taking trains is fun, and somewhat simple. Though it seems confusing at first, they're easy to understand after you ride a few. The key to taking trains is using schedules and a little planning.
Ø There are several handy websites where you can find schedules:
http://www.ns.nl/- trains in the Netherlands
**http://www.alleuroperail.com (click on train schedules) my favorite
http://www.raileurope.com/us/rail/index.htm - similar to the above
Ø The trains, esp. in the Netherlands, can be somewhat unreliable. Always give yourself extra time and double check the schedules. It's also useful to note the train number (which can be found on reservations and certain websites) and look for it on the train to be sure you're getting on the right one.
Ø Most of the conductors at the stations speak (at least a little) English, so don't be shy to ask them questions, such as, "is this train going to (Venlo)?" It's also useful to ask if the compartment goes where you want to get off, sometimes the train splits apart and goes to different places!
Ø It's often worth the 3 euro (or so) charge to make reservations in advance. This can be done (usually) online, over the phone, or at the nearby stations (Nijmegen or Venlo). The trains fill up sometimes and if you don't reserve you "can't" get on (there are always exceptions) and you have to change your plans. This can be scary if you need to get back in time for class.
Ø Check out the kind of train you're taking. Some of them have extra charges ontop of what the Eurail covers, and sometimes even more past the reservation fee.
Ø It is possible to get on a train without a reservation, esp. going between cities in one country, but sometimes if you sit in a seat without a reservation, someone who has a reservation there might kick you out, and it becomes like a game of musical chairs trying to find a seat.