Original Source: Install Flash Player on Ubuntu
Installing Adobe Flash Player on Ubuntu is just a matter of some simple steps.
Step 1: Look for the Ubuntu Software Center icon and click on it. You will find this icon somewhere along the launcher bar.
Step 2: In the place provided in the Search bar, type “flashplugin-installer” and hit enter.
Step 3:After the search has finished, there you will see the Adobe Flash plugin.
Step 4: Install the plugin. The option will be given on the search result.
Step 5: Once installed, go to a website that needs Flash so you can check if it’s working.
Step 6: It should successfully work but in case it does not, then follow the steps again.
You wouldn’t need to install Flash Player if you are using Google Chrome since it already has the latest version of it.
For this procedure, you will only need Ubuntu and Adobe Flash player.
How To Install Flash Player on Ubuntu Linux