This thorough article, written by Rabbi Aryeh Citron of Chabad.org, discusses both the meaning behind the two loaves used for the blessing over the bread on Shabbat, as well as practical, detailed,
This article from Chabad.org provides biblical, Talmudic and halachic reasons for the custom of covering the challah before and during the HaMotzi blessing. In practice, the Shabbat challah is covered from the beginning of
The following excerpt from “Shabbat Customs,” published by ReformJudaism.org, describes the various customs pertaining to the blessing over the bread on Shabbat, including the covering of the bread and knife, the