Trains are the best way to get around Europe and a Eurail Pass, also known as a Eurorail Pass, might be a good solution for you.
Although budget flights have made air travel more affordable, if you want to explore, trains are your best option. And for short journeys or trips with good connections, taking a train can be faster than going by plane - not to mention that you don't have to go through airport security!
If you're just taking one or two long train trips during your European vacation, you're probably best to just buy point-to-point tickets. But if you want to see more of the continent, a Eurail pass is a good option.
A Eurail pass (also known as a Eurorail pass) is a ticket which allows you unlimited train travel in Europe. It comes in many different forms - you need to decide which region you'll be travelling in, how long you want the pass to last, how many days you'll actually be travelling within that time frame, and if you want a first or second-class ticket.
For more information on Eurail/Eurorail tickets and train travel in Europe, visit:
http://indietravelpodcast.com/podcast/eurorail-eurail-pass-tips-tricks