How to install skype on Ubuntu.
Step1) Open terminal by pressing Ctrl+Alt+T.
Step2) Type software-properties-gtk and press Enter. It will open "Software & Updates" box.
Step3)Click on the Other Software tab and check Canonical Partners. You will be asked to Authenticate the change.
Step4)Go to the terminal and type sudo apt update.
Step5) After the update is done, type sudo apt install skype. It will start downloading skype.
If you don't want to use the terminal for first three steps then go to System settings>Software & Updates>Other Software > Canonical Partners
You can launch Skype by typing skype in "Search your computer" or you can also go to "Ubuntu Software" and you will see skype there under the "installed" tab.
