Habits

Iranians have their own habits. Knowing these habits will helps you as a tourist have a better interaction with local people when traveling to Iran.

Hospitability is part of Iranians culture. People specially in small cities and villages behave kindly with tourists specially foreigners.
It is possible that people invite you to their homes.
You may have been asked about some personal things like your age or income. These kind of questions are not abnormal in Iran.
Do not surprise if people hug your baby, it is because of their interest in the baby .
Do not compare Iranians with Arab people.
Persian Gulf is the old and real name of this sea, Please name it in the correct form.
Normally in Iran, people sit on the floor. It changed in big cities but in small cities and villages people sit and lie down on the floor.
Complimenting is one thing is not easy to explain. It can be easy to explain with an example. You take a taxi. When you want to pay, the driver say "Be my guest!". It is not his real intend, it is just a polite sentence in response to your question. In many cases like paying or entering, people ask you not to pay or invite you to be the first person who enters.
importing and Drinking alcoholic are forbidden in this country. All foods are Halal.