In December I will be traveling to Europe for 30 days, and I wanted some tips from experienced travelers on have to stretch every dollar I have (my budget is $5000 if that helps), how to make my self look less like a tourist, what things I should avoid doing, how to avoid thieves, how to keep my stuff safe while walking around the city, and anything else that you might think would be helpful would be greatly appreciated!! (countries I will be visiting London, Paris, Amsterdam, Venice, and Rome)