Learn more about trees and how important they are to the environment. Find out what you can do to help them. Alpharetta Branch hosts this free Fulton County Library event in Alpharetta, with 6:00 PM-7:30 PM, room or area: Auditorium (lower level.). The library audience fields mark it as a family or youth program, so caregivers should use the event page for age fit and room details. The library event page is the source for current capacity and access notes.