The Derry Public Library hosts a free Button Up New Hampshire Home Energy Workshop sponsored by the Derry Energy and Environmental Advisory Committee on Tuesday, Oct. 25 from 6:30 to 8:30 p.m. The workshop will cover: how to save energy in the home; tips for do-it-yourself energy-saving projects and air sealing and insulating basements, walls and attics; building science; and the Energy Star Program. Light refreshments will be served. Presenter is Andy Duncan, energy training manager at Lakes Region Community College in Laconia. For registration and questions, email Maureen Reno at Maureen_reno@comcast.net or call 536-5030.