<prompt> Human: So Im planning to go on a trip to Europe after college. Its always been something Ive wanted to do and I figure its best to do it now after my last semester and before I start my new full time job. I have some money saved up, but I dont even know where to begin with travel expenses. I plan on visiting at least a couple of countries over a 3 week period and doing many touristy excursions. Any tips on how to budget a trip like this would be appreciated. I can do my own research on specifics but any initial estimates and breakdowns of how much things would cost would give me a good place to start.Assistant: Stay in hostels. I went for 3 weeks twice and spent like 1000 in non travel expenses. Mostly I spent money on food and booze. Hostels are cheap and you meet many people in your exact position from all over the worldHuman: Ive never stayed in a hostel before.. is that like an AirBnB?  <response>: No, it s a bunch of bunk beds in a big room, with shared bathroom. 