how do i get the lefthand sidebar to show everything after 11.1.5?

restarted my computer last night. now the itunes sidebar is all weird.

I figure this must be some sort of weird update.

how do i get the sidebar to show everything again, instead of having to drill down strangly placed weird icons?

like a 'library' sidebar drill down, that shows all movie and music and devices on the sidebar.

would like it to always show everything like in previous versions of itunes as default.