do you have to already own photoshop on your computer to have access to it in the CC? Or can you open it from within the CC? Im lost. I now have CC but now I cant find Photoshop although I had no problems when i downloaded lightroom it showed right up....

I dont really know how this is supposed to work. Can someone please explain it to me. Do I have to buy photoshop all over again or was it supposed to download an updated version when I got CC?