Do you mean you want the menu back? Simplicity itself. Just click on the red button at the top left and select Show Menu Bar.
I have the menu back (File, Edit, etc.), but as Nightflier comments, there are other things that went **poof** with 10.60. And the popups are horrendous (login, certificate warnings, etc.). Not wild about the default text changes, either, but haven't taken the time to go through all that to see what I need to change. And last, but not least, mouse scrolling has become slower and more cumbersome. Apparently there's a CSS issue with the newest version.
Nightflier? Don't bother upgrading.. Seriously.... I may roll back to 10.10 myself.