Of the three major festivals in which we are biblically commanded to appear at the Holy Temple in Jerusalem, both Pesach and Sukkot are seven day holidays while Shavuot is only one day. Why? In article #4, the Zohar provides an esoteric answer.

Is Kabbalah an area of deep mystical study? Is it a system of contemplative meditations? Is it an ancient storehouse of magical manipulations of nature? See article #2,

The 3rd article is for the first chapter of Pirkei Avot, for those who continue to study it on Shabbat afternoons throughout the summer