Adding a music folder to iTunes library saves a lot of time. Check the steps below to find how to do that.
- Launch your iTunes.
- Find “File” tab  on the menu bar and click it.
Click “Add Folder to Library”
- Find “Add Folder to Library” option in the drop-down list and click it. A pop-up will appear on the screen which allows you to select music from your computer.
- Navigate to the location where you store your content folder with the navigation bar to the left of the pop-up.
- Select the folder and click “Select Folder”.  All the content in that folder will be imported into iTunes library.