Many computer systems provide remote login, or telnet access.
Commands you send on your computer are sent to the remote host computer. You can log unto these computers all over the world, from California to Canada to England and Australia. All you need to know is the address of the remote computer. You can use telnet to access library catalogs all over the world to see if they have materials on a topic. You can also use telnet to access gopher and the world wide web if you do not have access to these programs.