Things You'll Need
Instructions
Power on the Sony PlayStation 3 and wait for the Menu screen to load.
Select the "PlayStation Store" option and click "OK." This connects you to the store and asks you to either sign in or create an account. If you do not yet have an online account, type in a username, password, email address, phone number, address and credit card information. The credit card information is used only if you purchase actual full games that cost money. Click "OK" once you finish. This will log you into the PS3 store.
Select "Demos" from the left side of the screen. A new screen appears with the option to either look at all the demos or browse demos by letter. If you know what game you want to demo, select the demos by letter option.
Scroll through the list of video games. There is a picture for each game, a small description and what kind of game it is (such as first person shooter or strategy.)
Select the game you want and and choose the "Download Now" option. In a moment the game will begin to download to your PS3. Exit out of the PS3 store.
Choose the "Monitor Downloads" option and you can watch the progress of the download. Although you can play games during this process, doing so will cause the download to pause. Once the download has finished, go under your "Gaming" folder and select the downloaded file. Choose "Install" and the game will install on your PS3. Once complete, you can play the demo game.