there's a lot to learn about terminal, but here are a few tips that will help your specific issue:
1) with a terminal window open, you can drag and drop both files and folders from Finder into the window (anywhere, it doesn't need to be by the cursor or even on the same line) for Finder to automatically enter the full path for you. You can use this to go to a folder using "cd" by typing "cd" and a space, drag and dropping the folder to go to, and hitting [return], or you can view a text file the same way using "cat". So if you can find the folder in Finder, you can drop it into terminal to CD to it or do other operations with it as needed.
2) once you are in a folder, you can hit [tab] to auto complete a path you've partially entered. If there is no match or you are at the end of a filename, you'll get a beep. If there's one entry, it will fully complete the path. If there are several possible completions, it will list them immediately if the list is short. If the list is long, it will prompt you to see if you really want to "show all 215 possibilities?" etc.
The content of the folder list you show looks similar to the root directory (/) but is missing things like System and Applications, and shouldn't have root in it, so I don't know exactly what you've got there.