It's really easy to enable text to speech and dictation. You can set it up through the images below. First, go to system preferences and then dictation and speech in the preference pane, first click dictation and then turn on dictation you can change the shortcut keys if you would like (Is it is usually set to double tapping the function key also called the fn key). To use dictation simply just click on a text box and double tap the function key (or the set shortcut key if you changed it.) If you would like to use text-to-speech click right next to dictation at the top; it is right next to it. From here you can change the voice speaking rate, what the voice sounds like (we recommend Samantha or Tom,) and the keys that will enable the voice to start speaking. To use text-to-speech select the text you want to use by highlighting it, and then press the shortcut keys you selected for text to speech to begin.