To enable
Canonical Partners and install
Skype from the repository. Navigate to
menu>Preferences>Software & Updates. After the window opens, select
Other Software and
check/tick the
Canonical Partners box. You will be asked for your
user password when you close the window. This will update the cache. You will now be able to download
Skype from the terminal. To do this, open a terminal window with the following keystrokes:
Ctrl+Alt+t. Enter the following command into the terminal window:
sudo apt-get install skype
Hit enter and enter your
user password if asked. Hit enter again and follow the instructions presented in the terminal window. After the installation has completed, you'll be able to access
Skype by navigating to:
menu > Internet > Skype.
Alternatively you can now install
Skype from the,
Synaptic Package Manager or the
Software Manager. These can be found by navigating to:
menu > System Tools > Synaptic Package Manager and
menu > System Tools > Software Manager respectively. That's it

.
Edit:- Amended the now defunct
apt only code shortcut to include
sudo apt-get