Apple yesterday released the OS X Mavericks 10.9.3 Software Update and some of the people who have installed it reported that their /Users folder has seemingly disappeared from the Finder.
The /Users folder is located at the top level of your hard drive and holds sub-folders for specific user accounts so some feared 10.9.3 has messed up their system. Turns out the folder is there, it’s just hidden and here's how to unhide it...