When you open a folder you’ll see the buttons in the toolbar at the top: Back, Forward, Up, Search, Folders, etc.
We’ve talked about “Back” and “Up”  before and “Search” needs no explanation, but what about “Folders”?
Give it a click and find out. You’ll see that it brings all your folders, drives, etc. just like Windows Explorer. This makes for easy folder navigation.
Want to change back? Just click the button again.
What a handy little button.