UNIX -- Interactive shell logins and ftp (or fetch) logins: When using telnet or ftp, you must move from folder to folder by using the "cd" command to "change directory". The final location is known as the full "path" to the file or directory, a term that may be used in graphical ftp programs such as "Fetch" or "WS_ftp".
When using telnet, you need to be at the shell system prompt (usually the prompt with "%"). You cannot have the "welcome menu" running; quit the welcome menu.
Note -- it is useful after entering a "cd" command to enter the command: dir in order to get a list of files and directories. Unlike opening a folder in Windows or a Macintosh, you have to ask for the list of files.