For the tourist this mainly relates to buying goods from markets or bazaars. There are a few basic rules that you need to remember. Never offer a price that you cannot afford 2. Take your time and relax 3. Enjoy the sport of it all and don't feel obliged to buy.
Most mosques are open to visitors of all religions.
However, it is important to dress respectfully. Shoes must be removed and women should cover their head with a scarf. Clothing should not be revealing.