For a librarian or researcher, the mushrooming growth creates many problems in finding materials that meet needs and are from verifiably accurate sources. There are many attempts to get a handle on the contents of the nets and index it, but most of these index everything on a topic, not just those that meet the requirements of scholarly or business uses. There are URL formats for the various types of resources on the nets. The other parts depend on the specific type and resource. The pictures are missing, but the text content is still accessible in most cases.
Lynx is the most common text browser.
Up and down arrow keys are used to navigate between choices within a page, and left and right arrow keys to navigate to and from othe r pages. Gopher was the first system to make the nets friendlier, providing hierarchical menu access to local and Internet resources. It grew from a project at the U of Minnesota to develop a menu system to access University files needed by many people. Within a few years after the first gopher was introduced, there were thousands of gophers on all seven continents. If your site runs its own gopher software, you can use the gopher command to call up the software.