Libraries first came to Windows 7 and are really a useful way to organize your files, as their function is to gather files from different folders and show them in a single view.
In Windows 10, "Libraries" by default is missing from the navigation pane. If you've used libraries frequently in Windows 7, you may want to have them in Windows 10. See the steps below to enable them below.
Step 1: Open File Explorer
Step 2: On the top right, go to the "View" tab and from there press the "Options" button
Step 3: In the menu that will open, select "Change folder and search options".
Step 4: A new window titled "Folder Options" will open. There, go to the "View" tab, then scroll down the menu bar until you find the "Show Libraries" option in the "Navigation Window" chapter.
Step 5: Check "Show libraries" and then press the OK button. Close all windows.
When you reopen the exploration, Libraries will appear in the navigation pane.
Alternatively, for those who are "looking for" a little more, you can display the Libraries from Execution with a shell command. Press the Win + R shortcut keys and type the following in the Run box that will open: shell: Libraries
The above special shell command will immediately display the Libraries folder.