Adults ages 18 and older can learn mahjong in a beginner-friendly session at Prior Lake Library. The program introduces the tiles, setup, rules and simple strategies, with time to play and socialize. No previous experience is necessary, and supplies are provided. Registration is required and opens October 1. The class runs October 22 from 5 to 7 p.m. in the Prior Lake Large Meeting Room at 16210 Eagle Creek Avenue Southeast.