I question about how does a blind person get speech going on a Ubentu System.

[Linux for blind general discussion]

Hello my subject line says it all, I am totally blind. I downloaded a 
copy of Desktop Ubentu 18.3. This distribution has been installed in a 
virtual Machine. After installation the system is running the GUI 
Interface. I would like to use Orca four scream Reading access? How can 
I due this?

Sincerely Maurice Mines.

PS this email has been dictated to my Mac Book pro. Please forgive any 
mistakes?I hope that this is readable?