Instructions work for all versions of iTunes.
From the drop-down menu at the top of the left panel, selectMusic.
Go to theMusic PlaylistsorAll Playlistssection.

If it is collapsed, hover your mouse to the right ofMusic Playlistsand selectShowwhen it appears.
go for the name of the playlist.
This opens the complete list of songs on the playlist in the main iTunes window.

Songs display in the current order they play.
To reorder a song in your playlist, select its title and drag it to a new position.
Repeat the process with any other songs you want to rearrange.

iTunes automatically saves these edits.
When youcreate a playlist in iTunes, songs appear in the order in which you add them.

