Instructions
Scroll to the right from the main menu of the PS3 and select "PlayStation Network." Scroll down to "PlayStation Store" and press "X" to launch.
Scroll down to the "Games" category in the PlayStation Store and press "X."
Browse the available game titles for download and press "Buy Now" to begin the purchase and download process.
Press "X" over "Confirm Purchase" to pay for the game. The money for the game will be withdrawn from your PlayStation Account.
Press "X" over the game after the funds are withdrawn to begin the download process. The game will be saved to your PS3's hard drive.