Once the connection has been established WS_FTP will close the dialogue box and switch to the main window.  The files on the local system will appear on the left, while the files on the hosting server will appear on the right.  There are no files in hosting directory in the screenshot below.

Files can be moved from the local system to the hosting server by double-clicking on them.  To continue this tutorial click on 'index.html' in the screenshot below.