Check out the inter rail tickets. You can go around europe for a month on less than 2000 dollars I'm sure lol. I plan to do it sometime in the near future. Just depends on the areas you visit, you shouldn't be too ambitious because there is no wasteland in the middle like the US, every country is different and sometimes the smallest are the best and each one deserves some time. Make sure you go to Austria, Czech Rep, Slovenia I heard is great too. Croatia, Hungary, Holland. You should go during the summer because you'll find plenty of young europeans doing the same thing, travelling around and enjoying hte summer festivals