Run Orca by typing orca in a terminal session window. You can do so from a virtual console window if you do not yet have access to the GUI. With the GUI installed you can also press Alt+F2 or Meta+R to bring up the Run dialog and then type orca as the command (followed by any optional parameters). Then, press Enter. Orca will automatically enter text setup mode if you run it from a virtual console window or your GUI environment is not yet set up for accessibility.