iTunes menu and top left corner button missing

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Did you check that iTunes is opened in full-screen? If so, it's normal that the menu bar doesn't show up. To show it, move the cursor to the top of the display. To get out of full-screen, move the cursor to the top right corner of the display and press the blue rectangle, so iTunes will be back in window

With menu bar, are you referring to the bar at the top of the display? If so, the only option is that iTunes is in full-screen

From what I see, it looks like you aren't using OS X. If you are using Windows, read > http://support.apple.com/kb/HT5610?viewlocale=en_US&locale=en_US Also, from what I know, the book button doesn't exist in Mac OS X

In Mac OS X, the menu bar is not in the application window but at the top of the display. If you have a look at the top of the screen, you will see the toolbar with all the options you want