This totorial shows you the simplest way to get your Pi Zero model W up and running and connected to WiFi. Our interest is operating the Pi zero W headlessly, so we show you how to boot it and get the IP address and then SSH in via putty.
See complete lesson and links to the gear you need here:
http://www.toptechboy.com/raspberry-pi/raspberry-pi-zero-model-w-tutorial-setting-up-and-booting-the-pi-0-w/