There are some short cut keys to make iTunes look more like the old version
ALT shows the menu bar temorarily
CTRL+B show/hide menu bar
CTRL+S show/hide side bar
CTRL+/ show/hide status bar
To make search more like it was, click on magnifying glass in search bar and uncheck "search entire library"
Clicking on the little square thing at the top left of iTunes also opens a menu of choices.