If your system is running the FastTrack server and your HTML file and all files it references reside in the public_html directory or a subdirectory, you do not need to do anything further to publish your files. They are automatically available for others to view. The URL for these files is http://<systemname>/~<username>/filename.
You need to take additional steps under the following circumstances:
You may also want to take a look at more introductory material about publishing and URLs.