The Hard Hat and Black Tie Affair, hosted by Habitat for Humanity of Southwest Utah, is 6-9 p.m. Saturday in the Tuscany Room at Best Western Abby Inn, 1129 S. Bluff St. It includes silent and live auctions. A free eight-week beginner American Sign Language class is 5:30-7 p.m. Tuesday at Southern Utah Deaf and Hard of Hearing Center, 1067 E. Tabernacle, Suite 10.