Hotels or retail outlets may change your money but usually at a poor exchange rate. Keep your wallet or purse is shut tightly and close to your body. A money belt is good for securing your cash and important documents such as your passport. Use your old film containers to hold soap powder, safety pins, bobby pins, and other small items for travel. Shop where the locals shop.
Tourist places tend to be overpriced.
Barter if it is socially acceptable in that area. Take short day trips to save on accommodation charges. When travelling afar, ask to stay at a friend's house or try hostelling. When booking a hotel room, always ask for the least expensive room. They will always quote you a high price and usually will have something cheaper, if you ask.