Installing new applications
Using Mint's Software Manager, installing new software couldn't be easier. Of course, you can learn all of the terminal commands to manage your installed software by hand, but you don't have to; the Software Manager should meet all your basic package management needs.
There is a great deal of applications available such as games, web browsers, music/video players, instant message clients, and more. There's most likely a program available to fit any need you can think of. To get some practice, let's grab a few new programs.
To install a new software package, first find it within the Software Manager application. You can click on a category and browse the available applications if you would like. Once you find an application you'd like to install, double-click on it, and then in the next screen, click on the Install button. Your new application will start downloading from Mint's repositories and then will be installed right away. Once the installation is complete...