Multimedia refers to using computers to integrate text, graphics, video, animation and sound. It combines visual and audio media to communicate in new ways for entertainment, education and advertising. The document discusses the basics of multimedia and animation, including graphic design, 2D animation, 3D animation, visual effects, and audio/video mixing. It provides examples of software used for each, such as Photoshop for graphic design, Flash for 2D animation, 3D Studio Max for 3D animation, and Adobe Premier for audio/video mixing.