Do you find that getting anything done in Windows 10 takes ages? The Quick Access menu can be found in File Explorer (right-click Start to see the option for File Explorer), and it can help you save a lot of time while navigating the operating system.
Right-click on a file, folder, or app's icon and select Pin to Quick Access. This means they'll appear and be easily accessible, which is especially useful for recently visited folders.
You can also make File Explorer load the Quick Access menu by default instead of This PC when you open it. To do so, open File Explorer and go to the View tab in the top menu (next to Share), then to the far-right of the pop-up menu, select ‘Change folder and search options.'