Jorge Ferreiro teaches an introductory workshop on HTML5, CSS3, and Git/GitHub pages to help students build their first professional portfolio website. The workshop covers basics of HTML5 tags for titles, paragraphs, images and links. It then discusses CSS3 for styling websites with color, background, and fonts. Finally, it introduces version control with Git, cloning repositories, adding/committing changes, and pushing to GitHub pages to host the finished site.