Because there are so many different versions (and manufacturer skins) for Android, your screen may look slightly different than the screenshot below. The following screenshots were taken from an LG G3.
Click on Settings (if may be in your “apps drawer” if you can not find the icon on one of your screens).
Make sure Wi-Fi is turned on.
Tap the name of the secure Wi-Fi network you wish to join (note that password protected networks have locks just to the left of their names).
In this example, we are joining the network called “TMS1”
Enter the password for the secure Wi-Fi network, then tap Connect. If your device doesn’t connect, the password you’ve entered is incorrect.
After you join the network, you’ll see a check mark next to the network and a Wi-Fi symbol in the upper-left side of your display. If you don’t know the password to your Wi-Fi network, please contact Tele-media.