Verify that your Wi-Fi is on and connect manually to your Home Wi-Fi.
Go to Settings -> Wireless and Networks -> Wi-Fi Settings.
Select your home network (enter your password if necessary). If your connection was established successfully, wefi will make sure to reconnect you automatically in the future.
Open wefi client by clicking the wefi icon on your taskbar (if wefi is not running use the start menu to open wefi).
You will see a list of all available Wi-Fi networks in the vicinity.
Double-click on the name of your home network.