This thorough article answers all of your questions about Yom Kippur, including a basic introduction to the Jewish Day of Atonement, an explanation of customs and synagogue services, and how to participate in services from synagogue or home. An excellent resource for anyone interested in the basic background and practice of the festival, this article is from My Jewish Learning, a website empowering Jewish discovery for anyone interested in learning more. Please note that questions of Jewish law and health (such as who is exempt from fasting) should be verified on a case-by-case basis with your rabbi and doctor.