During the first half-hour when the candles are burning, there is a custom (not a full prohibition) to refrain from work. Also, the light of the Hanukkah-menorah shouldn't be used for mundane purposes. Other than that, there are no prohibitions specific to Hanukkah.
Jews practice the beautification of the menorah during Hanukkah.
There is no special way of acting during Hanukkah, except maybe to be happy, and grateful to God for the miracles which Hanukkah commemorates.
Fasting is prohibited during Hanukkah (Talmud, Rosh Hashanah 18b).
Yes.
There is no city that is called the city of lights during Hanukkah. Paris is called the city of lights, but that has nothing to do with Hanukkah.
There are no specific requirements or traditions concerning how to dress during Hanukkah.
There's really no such thing as "Hanukkah Dinner". Meals during Hanukkah have no special times associated with them. Jelly donuts or potato pancakes are traditional and may be served at any time during Hanukkah.
Because, like Purim, Hanukkah is not commanded in the Torah itself. See also:More about Hanukkah
It is customary to avoid time-consuming forms of work (such as sewing or car repair) during the first half-hour after lighting the candles. Other than that, Hanukkah doesn't have any behavioral restrictions.
Electric menorahs are considered decoration and can be lit with any number of candles at any given time; unless this is your main menorah, in which case it should be lit during Hanukkah, with the blessings, at or after sundown.
Yes.