Now that your program is installed, what's next? Running it, of course! If you're not familiar with how to use the program you just installed, you'll want to read the program's man page by typing:

$ man programname

It's possible that a program may require additional configuration steps. For example, if you installed a Web server, you'll need to configure it to start automatically when your system boots. You may also need to customize a configuration file in /etc before your application will run.