Jewish prayer-books have a structured order. Prayers are ancient, and often are sung or chanted. Some prayers are said in unison, and some are not. Some prayers are said more than once per day, some once a day, and others are said only on Sabbath, festivals or certain occasions. Some prayers are said aloud, and some are whispered. Most of the services are in Hebrew, but a couple of prayers are in Aramaic.
While praying, Jews either sit in chairs, or stand, depending on the prayer. There is also some bowing forward, but Jews today do not kneel except once a year on Yom Kippur (the Day of Atonement).
In between the prayers, Kaddish is said; and the Torah is read on many occasions.
While formal prayer services are held in the synagogue, many other blessings (such as those over meals) are said in the home.