I have been working on a book projects in InDesign for days. I don't know when or what happen but all my margins, hidden characters, guide are no longer visible. I have searched through out the interface to turn on the guides, text boxes, margins, hidden characters and can't find the on button. I have looked for the answer in the forum. I am running InDesign CC on Windows 7 machine. Help would be appreciated.
You probably are on View/Screen Mode/Preview. Turn it back to Normal.
The shortcut to toggle preview mode is W when you don't have an active text cursor, so it's not hard to imagine hitting it accidentally.