Hey man its easy, you jump on a train them camp some where. You can stay in the shit holes or just urban camp. Gets cold at night up north but down south it was nice.
Even better is getting a bike and riding town to town, camp in the country. You know get a map and compass and learn what meters are haha. Thats really "backpacking europe" Did it over a month and ended up in Spain! Clubs there are nuts!