This describes how to create a FOAF Profile using the form that is available at: http://personalprofiles.fwwebdev.com/CreateProfile.html . There are other videos on this website that describe what FOAF is and what the Semantic Web is all about.  For more videos like this visit: http://futurewavedesigns.com/drupal7/training-videos-semantic-web
The other video describing FOAF in most cases, should be watched first as it will explain more about what FOAF is and what a controlled vocabulary is.  By defining vocabularies on the web, or on the Semantic Web, we are able to specify the meaining of terms that are used and how they relate to other terms.