Drilling through a succession of nested folders and subfolders in the Finder to find the one file or folder you need can be slow and inefficient. If you know the name of the folder you want, you can use the Finder’s Go > Go to Folder command (Cmd-Shift-G) to streamline that process.
What you may not know is that you don’t even have to type in the full name of the folder you want: if you’re manually entering a path in the Go to Folder dialog box, pressing Tab will autocomplete the folder name (assuming you have entered enough information to make the choice unambiguous). For instance, entering /b and pressing Tab will autocomplete the name to /bin/ (assuming you have no other folders beginning with b in the root folder). This tip is especially useful for accessing hidden folders; even if the folder is hidden, it will show up in the Finder if you enter its name in the Go to Folder dialog box.