Starting and stopping

Enable Voiceover on Mac by going to System Preferences then Accessibility then Voiceover and click the checkbox to enable voiceover.

You can start (or stop) VoiceOver by pressing Command + F5.

The VoiceOver Activation keys (called VO keys) are control + option or CAPSand will be referenced simply as VO. For example, VO + H (or control + option + H) will open the VoiceOver Help menu.

Voiceover works best with Safari and also make sure that if you are using safari then enable accessibility by going to Advanced then Accessibility and press Tab to highlight each item on webpage.