From the Menu Bar, click File > Open.
Click the down arrow at the end of the Look In field and find the directory where the file is located.
Double-click on the directory name. When the file in the chosen directory appears, double-click the file you wish to bring to the screen.
Begin editing the document.
Each open document is represented by a tab along the bottom of the screen. Multiple documents can be open at one time. To move between open documents, click the tab of the document you wish to bring to view.