CADTutor offers free tutorials on various software titles divided into three categories. The AutoCAD category includes tutorials on three versions of the popular software. 3D Studio, Bryce, and Photoshop are among the titles in the Digital Design category, and Web Building covers Dreamweaver and FrontPage. Each tutorial is accompanied by illustrations and screen shots that clearly demonstrate the proper use of the application. An Image Bank section "provides free vector and raster images for use in your projects and tips on how best to use them." The site is maintained by a professor who teaches at the University of Greenwich and the University of Kingston. Its popularity has soared since its debut, and currently about 1,000 people visit the site each day.