When you come across a word that you want to look up, highlight the word, click the right mouse button, and choose Copy from the menu. Then click Look up a Word at the top of the screen. Place the cursor in the box and click the right mouse button. Choose Paste from the menu. Now hit the Enter key on the keyboard. After you have found the meaning of the word and are ready to return to the text, click the Back button at the top of the screen. Now, click the Back button at the top of the screen to continue.