GAMES INSTALLEMENT PROBLEM?

SO I DOWNLOADED DEVIL MAY CRY 4 FROM UTORENT AND IT WAS AROUND 8 GB. I CANT REMEMBER THE SITE FROM WHERE I DOWNLOADED, SO ANYWAYS I DOWNLOADED IT AND IT WAS IN AN ISO FILE I MEAN IT HAD THAT GOLDEN DISK SYMBOL ON THE LEFT OF IT. I DIDNT WORRY MUCH AS I HAD ISO EXTRACT FILE. I DOWNLOADED IT AND IT CAME WITH TWO FILES

1) THE 8 GB FILES WITH THE GOLDEN DISK (ISO)

2) AND THE INSTALLMENT AND SET UP PROGRAM

I THEN CLICKED ON THE ISO FILES AND THEN BEGAN TO EXTRACT WELL MOST OF IT WAS AUTOMATICALLY. THEN THERE WAS A FILES WHICH HAD ALL THE CONTENT OF THE GAME. SO I THOUGHT THE GAME IS BEEN EXTRACTED AND I JUST NEED TO INSTALL IT. SO I WENT TO THE 2ND OPTION THE INSTALLMENT AND SET UP FILES AND IT HAD TWO THINGS 1) DOWNLOAD AND 2) INSTALLMENT IT KEPT SAYING THAT ITS DOWNLOADING THE NECESSARY STUFF SO I DIDNT DO MUCH. I ALSO HAVE THE DIRECT X FILES SO THE INSTALLMENT WAS COMPLETE BUT INSTEAD OF GAME I GOT A MOBILE APP FOR PC LIKE WINDOW STORE. SO I WENT ON THE FILES OF DMC GOT THE GAME AND CLICK ON IT BUT IT SAYS NEED STEAM TO RUN THE GAME SO I DOWNLOADED THE STEAM APP AND TRY TO ADD THE GAME BUT INSTEAD OF DMC IT SHOWS THE APP SOFTWARE IN MY PROGRAM MENU.

THERE WAS ALSO AN NOTE PAD SAYING APPID 220440

SO HERE IS MY QUESTION

1) DID I DOWNLOAD THE WRONG FILE OR I JUST DON T KNOW HOW TO INSTALL

2)AND PLZ TELL IF THE RIGHT WAY OF DOING IT

3) AND IF NOT PLZ GIVE ME SITE WHERE I CAN GET FREE PC GAMES WITHOUT ALL THESE COMMOTION.