Congregation Shaarie Torah will hold a learning event the first night of Shavuot for adults and teenagers 12 and older. Classes will run from 8 p.m.-midnight, including cakes, fruits and beverages, and the opportunity to chat with Rabbi Zuckerman, faculty and staff of the synagogue. At 8 p.m. Cantor Aaron Vitells will speak on “Revelation According to the Hassidic Movement”; at 9 p.m. Bob Horenstein will speak on “Would Ruth Have Been Eligible Under Israel’s Law of Return?”; at 10 p.m. Dorice Horenstein will speak on “The Ten Commandments-Why Them?”; and at 11 p.m. Rabbi Arthur Zuckerman will speak on “Will the Real Mt. Sinai…Please Stand Up?” To RSVP, call 503-226-6131. 8 p.m. Congregation Shaarie Torah, 920 NW 25th Ave.