Running gandhi after install

Hi, I am totally new to this so I’m hoping someone can help me find the way out of this abyss I’m in. I wanted to download gandhi. It said that it required node, rethinkdb, redis, and homebrew would help too. I installed all, I think successfully, but nothing happens. And I don’t see gandhi in my applications to try opening up.

Can someone out there guide me? Thank you if you can!!