* ACA Open Enrollment Forum: Northgate Library, 278 Northgate Mall Drive, 10 a.m.-2 p.m., free assistance on ACA options and tax preparation given by certified Navigators with the Medical Foundation of Chattanooga. 423-622-2872.
* Chattanooga Herbies: Hamilton County Extension Office, 6183 Adamson Circle off Bonny Oaks Drive, 6:30 p.m., visitors welcome, program by Jim Gumnick on bay laurel. 423-834-1748.
* ElderScholars: University of Tennessee at Chattanooga campus, University Center, Lookout Mountain Room, 1 p.m., free and open to anyone age 50 and older, program by Jerry Pala on TVA and its history in East Tennessee. 706-937-3748.
* Introduction to Buddhism and Zen: Unitarian Universalist Church, 3224 Navajo Drive, 7-8:30 p.m., four consecutive Wednesdays, Jan. 14-Feb. 4, free, may attend one or all four classes. 423-622-2862.