With the development of the Internet technology and proliferation of the network application, visual materials have been digitized and archived on many publicly accessible computer servers. However, these visual resources can be beneficial to educators only when they know what they are, what they look like, in what format they are created, and how they can be used for instructional purposes. The purpose of this paper is to demonstrate: (1) the richness and diversity of the visual resources on the Internet; (2) the major categories of resources; (3) their characteristics; (4) the popular format in which they have been created and archived; (5) common access points to the resources on the Internet; and (6) pilot projects of how visual resources are used in the classroom for instructional purposes. The history of and some data on the Internet is provided. Visual resources on the Internet are characterized as digital, interactive, and manipulative, and they can be classified into three major categories: still images, motion pictures, and Internet news and discussion groups. Netiquette (network etiquette), problems, and rules for using Internet visual resources are outlined. Two appendices define 22 network terms and abbreviations, and offer a list of visual resources available on the Internet. (MAS)