Speak Selection: To hear text you selected, tap the Speak button.
Speak Screen: To hear the entire screen, swipe down with two fingers from the top of the screen.
Speech Controller: Show the controller for quick access to Speak Screen and Speak on Touch.
Highlight Content: iPad can highlight words, sentences, or both as they’re spoken. You can change the highlight color and style.
Typing Feedback: You can configure typing feedback for the onscreen and external keyboards and choose to have iPad speak each character, entire words, auto-corrections, auto-capitalizations, and typing predictions.
To hear typing predictions, you also need to go to Settings > General > Keyboards, then turn on Predictive.
Voices: Choose a voice and dialect.
Speaking Rate: Drag the slider.
Pronunciations: Dictate or spell out how you want certain phrases to be spoken.