My new MacBookPro

Hello,

I do not know anything about Apple, although I have an iphone.

last night, I was in the process of installing my new 15'' Mac Book Pro. I went through the process with an oral voice (VOKey) directing me. The installation got to the end but I am still unable to get rid of the voice. Everything I type is said orally. Still there is a black small rectangular window on the desktop where is written (also orally said) everything the mouse does. How can I get rid of the voice in order to start using my mac pro? Please help. Thanks.