Number of layout windows and options can easily overwhelm a Photoshop beginner. Even intermediate users can find it difficult to restore layout and positioning of different small windows. Fortunately, Photoshop has feature to clean up the layout windows and allow you continue working in familiar workspace environment.
Reset to default Workspace
Incase you have closed few effect option windows on the right side or dragged left menu to top – no need to get nervous. We can easily restore default workspace in few simple clicks.
Goto Window menu option, click on Workspace > Default Workspace or Reset Palette Location or Reset Keyboard shortcuts. This should make Photoshop environment very familiar looking and you can carry on with usual design stuff.