What happens next?

How to use a eurorail pass
Get the eurail global pass for maximum freedom.
If you want to travel across several countries in europe, and to travel by train frequently during your trip, choose the global pass. This option allows you to travel through 28 countries in europe--most of the continent except great britain.
You will choose a specific global pass based on the length of your travel dates. Global passes can be used for essentially unlimited travel for a period of 15 days , 22 days, or 1-3 months.