Developing locally is one of the best things that can happen to web developers. Not only does it let you dispense with upload/download times, you can create as many projects as you want, work with real domains locally and generally speed up everything you do.
The presentation will be given on 2016-07-10 from 10:00 to 11:00 at Rails Camp NYC at the United Nations Secretariat Building, 405 East 42nd Street, New York, NY 10017.