The 3 Hanukkah blessings are only for candle lighting, there are no other ceremonies.
When you light the candles you say:
"Ba-ruch A-tah Ado-nai E-lo-he-nu Me-lech ha-olam a-sher ki-de-sha-nu be-mitz-vo-tav ve-tzi-va-nu le-had-lik ner Shel Cha-nu-kah." (Blessed are You, Eternal our God, Ruler of the universe, who has sanctified us with Your commandments, and commanded us to kindle the Chanukah light.)
You also recite:
"Ba-ruch A-tah Ado-nai E-lo-he-nu Me-lech Ha-olam she-a-sa ni-sim la-avo-te-nu ba-ya-mim ha-hem bi-zman ha-zeh." (Blessed are You, Eternal our God, Ruler of the universe, who performed miracles for our forefathers in those days, at this time.)
And on the first night only, you recite the prayer for a special occasion:
"Ba-ruch A-tah Ado-nai E-lo-he-nu Me-lech Ha-olam she-heche-ya-nu ve-ki-yi-ma-nu ve-higi-a-nu Liz-man ha-zeh." (Blessed are You, Eternal our God, Ruler of the universe, who has granted us life, sustained us, and enabled us to reach this occasion.)
There are many Hanukkah songs, but any music is appropriate for Hanukkah.
No.
There are no special cookies associated with Hanukkah. Any kind of cookies can be seen at Hanukkah parties.
Hanukkah lasts 8 days
Eight.
Hanukkah is also known as the Festival of Lights, the Feast of the Dedication, or the Feast of the Maccabees. In addition, it is sometimes also spelled as Chanukkah.
Feast of dedication and Festival of Lights
There are no particular clothing requirements for Hanukkah in Jewish law. Whatever is acceptable for the rest of the year is good for Hanukkah too. Hanukkah is not one of the major Jewish festivals.
The last day has a special name (Zos Hanukkah), but otherwise is no different than any other day of 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.
There is no special clothing for Hanukkah.
There isn't a real Hanuka meal but any big feast in chanuka by Jewish law could be holy.