Web designing involves using applications like Photoshop, Illustrator, and Flash to create graphics, images, and animations. Photoshop allows editing photos by changing colors, layers, and cropping images. Illustrator is used to create vector graphics and 3D images. Flash creates animations and videos. HTML is the basic language used to structure and present content on websites. Key HTML tags include <p> for paragraphs, <title> for the page title, and <li> for lists. Dreamweaver provides tools to help build websites using HTML tags.