Chanukah

In the time of the second Bet Hamikdash, the Greek kings made decrees against the Jews in order to make them forget Torah and Judaism. They broke into the Bet Hamikdash and defiled it until Hashem had mercy on the Jews and saved them. The salvation came through the Chashmonaim who were victorious over the Greeks and served as Cohanim Gedolim. They returned to the Beit Hamikdash and only found one pure flask of oil which was enough to light for only one day. A miracle occurred and it lasted eight days. The Rabbis established a holiday, beginning on the 25th of Kislev (the day they found the flask) for eight days of festivity and joy called Chanukah. Below are various articles related to the halachot of Chanukah:

Chanukah Candles

Hallel And Other Minhagim

Lighting Chanukah Candles Placement of the Chanukah Candles Where Does a Guest Light Chanuka Candles? Earliest and Latest time to light Chanukah Candles Lighting Chanukah Candles on Friday afternoon Lighting Chanukah Candles in Shul Doing an activity before lighting Chanukah Candles Leftover oil and wicks Having a kosher Chanukia Kosher oil, wicks, and candles for Chanukah Candles A poor person lighting Chanukah Candles

Chizuk for Chanukah Hallel of Chanukah Al Hanissim on Chanukah Mourning and Fasting on Chanukah Minhagim of Chanukah

Chanukah Packet

Sources

( V | T )	The Jewish Holidays
Elul/Tishrei	Chodesh Elul - Rosh Hashana - Aseret Yimei Teshuva - Yom Kippur - Sukkot - Shemini Aseret - Simchat Torah
Kislev/Shvat/Adar	Chanukah - Tu BiShevat - Purim - Purim Katan
Nissan/Iyar/Sivan	Pesach - Yom HaAtzmaut - Lag BaOmer - Sefirat HaOmer - Shavuot
Tammuz/Av	Three Weeks - Nine Days - Tisha BeAv - Tu BeAv
Misc.	Yom Tov - Chol HaMoed - Rosh Chodesh - Fast Days