The Clack County Composter Recycler program is offering free, online and in-person instruction about “SMART” composting from 7 to 8 p.m. April 10 at the compost demonstration site at the Center for Agriculture, Science and Environmental Education, 11104 N.E. 149th St., Brush Prairie. Class includes an in-person opportunity to construct a compost pile and view demonstration compost bins in action. Participants are eligible for a free compost bin. Join via Zoom. Register here: clarkcountycomposts.org/classes-and-workshops/current-offerings/851-backyard-composting-4.