The different sects of the Jewish faith are conservative, which want to save the traditional elements while also modernizing it. Reform, like conservative except they don't necessarily have to keep the traditional elements and may change them. And Orthodox, the most traditional of all the sects, they believe the Torah is written law and must not be changed.
Some of the jewish holidays are Yom Kippur - the day of atonement, in which they do not eat or drink and have other restrictions as well. Hannukkah, which is a holiday that lasts 8 days, originating from an apocryphal book about a days worth of olive oil lasting 8 days, during this holiday, they tend to eat foods made in oil. And passover, which commemorates the freedom of Israelite slaves from Egypt