Modules will help you extend and enhance the functionality that your Drupal application comes with. There are numerous modules which will help you perform different tasks for your website and most of them are completely free of charge. In order to install a Drupal module you should follow several simple steps:
1. Choose and download the module to your local computer.
2. After you have downloaded the desired module you should navigate to your Dashboard. There proceed to the Modules tab ( you see see a list of pre-installed modules that you can manage there ) . Then click on Install new module :
There you should just Browse your computer for the downloaded file and click on the Install button.
That’s it ! Now you should be able to see this new module in yoru Modules list!