How do i find cheat codes for my friends sons video game?

I don't know which video game you are referring to, but chances are IGN.com can help. They're one of, if not the, largest gaming websites; if there are cheats for a game you can undoubtedly find them there, along with guides and walkthroughs. If the game is extremely new, the website might try to make you subscribe to get access to the walkthrough, but the cheats are always free, and if the game is a little older, maybe even a year, the walkthrough will be too.

I suggest you try a website such as

www.gamespot.com

www.ign.com

www.gamefaqs.com

Simply input the name of the game in the search bar, and there should be a Hints and Cheats tab, where it shows all the available cheats that have been found or are available to the game.

(MAKE SURE that you are looking at the game on the right platform, such as Playstation 2 cheats might not be the same for lets say an Xbox 360 game.)

Ign.com

Cheatplanet.com

gamegenie.com

http://www.g4tv.com/cheat/index.html

IGN.com they have a search enter your game and click cheats

go to option and select cheat codes

go to ign .com