Getting Started with the Raspberry Pi Zero Wireless
Connecting to WiFi
Next, let's connect the Pi Zero W to the internet. If you have a Pi Zero, you will need to add a Wifi dongle to your board's USB port (you may need a USB hub at this point). The Pi Zero W has built in WiFi, so you will not need any external WiFi dongles.
To enable WiFi on your Pi, look at the upper right corner of the Desktop, and left click the WiFi icon. You should see a list of available networks. Select the one you want. If it is a secured network, it will prompt you for a password. Enter the network password, and press OK. Give it a few seconds, and you should be connected. The WiFi symbol on the Desktop will change its appearance once connected. If you setup WiFi in Noobs, this information will already be saved. Adding WiFi isn't strictly necessary, but you will need internet access if you plan on doing updates.