Visit the site and find a group near you. From their website:
Welcome! The Freecycle Network™ is made up of 4,625 groups with 6,072,000 members across the globe. It’s a grassroots and entirely nonprofit movement of people who are giving (& getting) stuff for free in their own towns. It’s all about reuse and keeping good stuff out of landfills. Each local group is moderated by a local volunteer (them’s good people). Membership is free. To sign up, find your community by entering it into the search box above or by clicking on “Browse Groups” above the search box. Have fun!