Step 1 » Enable ubuntu canonical repository .
sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"
Step 2 » Update the repositories by the below command.
sudo apt-get update
Step 3 » Now issue the below command to install Skype.
sudo apt-get install skype
forward form:
http://www.krizna.com/ubuntu/install-skype-ubuntu-14-04/