I opened iTunes and no longer have a side bar (on the far left hand side). When I open iTunes it opens in Library but does not show my hard drive or folders. I have searched all over (at least 4 times!) and cannot find anything that will take me to the side bar showing my hard drive and folders s well as iTunes. I must be brain dead as I do not recall how to get it back.
I am on a new iMac, running macOS Sierra, V10.12.4 and I have iTunes V18.104.22.168.
Any help would be appreciated. Thank you.