1) Install fpse
2) Google "playstation iso"
3) Download games you already own, (obtaining games you have never bought is illegal)
4) Follow the fps bios instructions, follow all legalities
5) Run the game
6) Have some fun
Once you get used to the emulator scene you will love it. If you aren't able to follow instructions very well and occasionally do your own research on guides already written, and do indeed come to the conclusion you have an iphone 4 brain washed grey matter residing in your skull, then go back to the iphone