Read this user guide before use.
Installing the package is the same as with any other Joomla! component. Go to your site's back-end Extensions, Manage and click on Browse. Locate the ZIP package and click on Upload and Install.
Read more: Installation
In order to be able to upload files, other than images, you can set it up in Joomla! media manager.
Read more: Options
Actually the component take advantage of Joomla! Media Manager, and it just expands it's capabilities by giving you the ability to add any file within your articles.
Read more: Joomla! Media Manager