Headset
To connect your headset to the Wi-Fi, press the oculus button on the right controller to bring up the universal menu.
Use the controller to point at the Wi-Fi symbol and pull the trigger to select.
Select the wifi network you wish to join and enter the password.

Tablet
iPad
Swipe down from the top right corner.
Select Wi-Fi network and enter password.
Android (Samsung S7)
Swipe down from the top of the screen.
Select Wi-Fi network and enter password.