Install Wifi on Ubuntu manually

Wifi chip must be recognized and initialized

If your Wi-Fi dongle is listed in the Adapter menu then you can connect using Wi-Fi, if not then plug in an Ethernet cable to continue.
For those that are keen to hack Wi-Fi you can create a config file by typing:
sudo leafpad /etc/wpa_supplicant/wpa_supplicant.conf
Inside the file, type the following (inserting your SSID and password in the relevant sections):
network={
     ssid="your network's ssid here"
     psk="your network's password here"
     proto=RSN
     key_mgmt=WPA-PSK
     pairwise=CCMP
     auth_alg=OPEN
}